Hmmm, been a while since I came up with a "new" question!
Since both Striker and TCS have been decanonized...
I wasn't aware they had been cast out, when did that happen?
Making up a new table wouldn't be an easy task, there are a lot of influences on RL exchange rates. Condensing these down to a two dimensional chart feels somewhat inadequate. Ironic since I have always been happy grabbing whichever chart was at hand previously.
If I had to pick a limited number of known factors, in order it would be TL representing relative economic efficiency, population as a stand in for GDP and Starport as an indicator of volume of interstellar trade.
I breifly considered parsecs reflecting demand for a foriegn governments currency reducing as distance increases, but the simple mechanic of making the Imperial Credit the only transferable currancy between the stars will resolve distance issues. In effect local currancy is exchanged at the downport for Imperial Credits which are electronically transfered to the next system and turned into local credits there. Assuming the Imperial Credits holds a constant value throughout the Imperium, it can travel any distance.
Amber and Red Zones, like Starports should also have thier exchange rates influenced as their status will impact severly on interstellar trade.
Obviously as stand ins these are rough & ready and I'm ignoring interest rates, inflation, relative GDP growth, trade imbalances, economic cycles, etc.
Say TL & Population to create the chart, modified along one axis or the other by Starport type around class C. And modified a step further downward by Amber or Red Zone status.
For example;
Exchange Rate Table
Tech_________Population
Level________A__9__8__7__6__5__4__3__2__1
K________1.08 1.06 1.04 1.02 1.00 .98 .96 .94 .92 .90
J________1.04 1.02 1.00 .98 .96 .94 .92 .90 .88 .86
H________1.00 .98 .96 .94 .92 .90 .88 .86 .84 .82
G_________.96 .94 .92 .90 .88 .86 .84 .82 .80 .78
F_________.92 .90 .88 .86 .84 .82 .80 .78 .76 .74
E_________.88 .86 .84 .82 .80 .78 .76 .74 .72 .70
D_________.84 .82 .80 .78 .76 .74 .72 .70 .68 .66
C_________.80 .78 .76 .74 .72 .70 .68 .66 .64 .62
B_________.76 .74 .72 .70 .68 .66 .64 .62 .60 .58
A_________.72 .70 .68 .66 .64 .62 .60 .58 .56 .54
9_________.68 .66 .64 .62 .60 .58 .56 .54 .52 .50
8_________.64 .62 .60 .58 .56 .54 .52 .50 .48 .46
7_________.60 .58 .56 .54 .52 .50 .48 .46 .44 .42
6_________.56 .54 .52 .50 .48 .46 .44 .42 .40 .38
5_________.52 .50 .48 .46 .44 .42 .40 .38 .36 .34
4_________.44 .42 .40 .38 .36 .34 .32 .30 .28 .26
3_________.36 .34 .32 .30 .28 .26 .24 .22 .20 .18
2_________.28 .26 .24 .22 .20 .18 .16 .14 .12 .10
1_________.20 .18 .16 .14 .12 .10 .08 .06 .04 .02
0_________.12 .10 .08 .06 .04 .02 .00 .00 .00 .00
Modifiy TL cumulatively by (minimum TL0);
Starport type A +2, B +1, D -1, E -2, X-4
Rich World +2, Industrial World +1, Non-Agricultural World -1, Poor World -2
Amber Zone -2, Red Zone -4
For example an Agricultural TL9 pop 7 class B starport (Inthe SM2412) selling a 1,000Cr fridge to a Poor, Non-Agricultural World with TL8 pop 8 class D starport (Treece SM2311) results in;
TL9 raised one level by Starport B to TL10 or .66 vs. TL8 lowered one level by Starport D and three more levels by being Non-Agricultural and Poor to TL4 or .40
.66/.4 * 1000Cr = 1,650Cr cost to Treece for the fridge.
Dunno, maybe a starting point?
Cheers