I couldn't say it better myself.There is a lot to like about T5. It is there... if you can slog though the organizational nightmare to find it all. Then, as you find these things, you notice that information is missing, or listed twice with different values, or intermixed with charts that are not important to the current topic and should have been relegated to an appendix.
Yes it's good to have all the information in one book. I like the approach, but the primary goal of every Core Book is to attract the new players. We all know what attracts them: possibilities. Not the tools to "make everything yourself". Simple yet powerful rules, careers, skills, starships, equipment and psionics. T5 actually has most of these, but the reader should really dig through the unneeded stuff. The equipment list is still missing, and the base mechanics is too complicated: I see totally no sense in throwing more than 3 dice. Even the character generation is counter-intuitive since there are no lists of schools/universities, and not enough examples.
Roll low mechanic isn't a suicide. D&D wouldn't be less popular with a roll low mechanic The player actions are the same: calculate all modifiers and roll. Positive modifiers are still added, negative are still subtracted.I have T5 now... and I wanted this to be the ultimate edition. But this one seems to have so many ideas that are so different from the CT/MT paradigm and not better -- they are different and seem to add nothing to the game. Why do I need to have a pool of dice that do not act like a dice pool? When has any game been successful with a roll low mechanic?
I've played games with roll low and roll high mechanics. If GURPS has any problems with mechanics, it isn't roll low, it's the number of required rolls (the attacker rolls to-hit, the defender rolls to-defend; if some damage is applied, more rolls are needed) compared to just two rolls in D&D: to hit and to damage. Yes there could be additional rolls (saves, percentile dice for concealment etc) but the basic, most common mechanic requires just two.