I've recently read through Paul Elliott's Task System for CT and I like it very much; I'll probably adopt it for MTU with the following variations:
1)TWO, not only one, characteristics may be relevant for each task/skill; For example, a character with the UPP of 777887 with a skill of Electronics-1 repairing a radio transmitter (target number 7, for example) gets a DM of +3 (+1 for Electronics-1, +1 for INT 8 and +1 for EDU 8). This means that my variant favors broad talents (i.e. mid-level in many characteristics) over narrow ones (i.e. a high level in a single characteristic).
2) There is no +2 DM for exceptional characteristics in my variant, unless very specific circumstances prompt the referee to call for it (usually in a task when natural talent/ability/endurance is crucial for sucess).
3) Contest of Characteristics: When two characters directly contest their raw abilities (such as in arm wrestling, running, swimming etc) with no relevant skill involved, each character rolls 2d6 and adds that to her relevant characteristic; the character with the highest total wins. If another characteristic is deemed relevant, and one character has that characteristic at a double level than the other character, she adds a +1 DM to her roll. For example, Telina (UPP 898765) arms wrestles (that is, contests in STR) with Constantine (UPP A6C568); Telina rolls 5 and Constantin rolls 2; Telina wins (5+8=13; 10+2=12; 13>12).
4) Contest of Skills: When two characters directly contest their skills (vehicle racing, gambling, trying to impress a noble with their programming skills and so on), each character rolls 2d6 and adds her relevant skill level to it; if one character has a relevant characteristic which is twice as high as her opponent's equivalent, a DM of +1 is allowed in her favor (this could happen with up to two characteristics, and then each will give a +1 DM). The character with the highest total wins. For example, Telina (UPP 898765, Air/Raft-1) races in an air/raft (that is, contests in the Air/Raft skill) against Constantine (UPP A6C568, Air/Raft-2); Telina rolls 7 and Constantine rolls 8; as none of them has any radically advantageous DEX or INT (the relevant characteristics) over the other, Constantine wins (2+8=10; 1+7=8; 10>8).
5) Opposed Task: When one character attempts to perform a task and another character tries to prevent her from doing so, first determine the Target Number, and then roll 2d6 with the first character's skill and characteristic DMs as positive DMs and the opponent's skill and characteristic DMs as negative DMs; if the result is equal to or higher than the Target Number, the first character succeeds. For example, Telina (UPP 898765, Communications-2) tries to contact a ship in orbit by radio (Target Number 8 when being jammed; INT is relevant) while Constantine (UPP A6C568, Communications-1) tries to jam her transmission; Tellina rolls 5 and thus fails (2+1+5-1=7; 7<8).
I'll later try to adapt PSI, combat and ship combat into this system.
1)TWO, not only one, characteristics may be relevant for each task/skill; For example, a character with the UPP of 777887 with a skill of Electronics-1 repairing a radio transmitter (target number 7, for example) gets a DM of +3 (+1 for Electronics-1, +1 for INT 8 and +1 for EDU 8). This means that my variant favors broad talents (i.e. mid-level in many characteristics) over narrow ones (i.e. a high level in a single characteristic).
2) There is no +2 DM for exceptional characteristics in my variant, unless very specific circumstances prompt the referee to call for it (usually in a task when natural talent/ability/endurance is crucial for sucess).
3) Contest of Characteristics: When two characters directly contest their raw abilities (such as in arm wrestling, running, swimming etc) with no relevant skill involved, each character rolls 2d6 and adds that to her relevant characteristic; the character with the highest total wins. If another characteristic is deemed relevant, and one character has that characteristic at a double level than the other character, she adds a +1 DM to her roll. For example, Telina (UPP 898765) arms wrestles (that is, contests in STR) with Constantine (UPP A6C568); Telina rolls 5 and Constantin rolls 2; Telina wins (5+8=13; 10+2=12; 13>12).
4) Contest of Skills: When two characters directly contest their skills (vehicle racing, gambling, trying to impress a noble with their programming skills and so on), each character rolls 2d6 and adds her relevant skill level to it; if one character has a relevant characteristic which is twice as high as her opponent's equivalent, a DM of +1 is allowed in her favor (this could happen with up to two characteristics, and then each will give a +1 DM). The character with the highest total wins. For example, Telina (UPP 898765, Air/Raft-1) races in an air/raft (that is, contests in the Air/Raft skill) against Constantine (UPP A6C568, Air/Raft-2); Telina rolls 7 and Constantine rolls 8; as none of them has any radically advantageous DEX or INT (the relevant characteristics) over the other, Constantine wins (2+8=10; 1+7=8; 10>8).
5) Opposed Task: When one character attempts to perform a task and another character tries to prevent her from doing so, first determine the Target Number, and then roll 2d6 with the first character's skill and characteristic DMs as positive DMs and the opponent's skill and characteristic DMs as negative DMs; if the result is equal to or higher than the Target Number, the first character succeeds. For example, Telina (UPP 898765, Communications-2) tries to contact a ship in orbit by radio (Target Number 8 when being jammed; INT is relevant) while Constantine (UPP A6C568, Communications-1) tries to jam her transmission; Tellina rolls 5 and thus fails (2+1+5-1=7; 7<8).
I'll later try to adapt PSI, combat and ship combat into this system.