Well first of all i seem to have somehow managed to download old version of your mod. The Thereshallbewings > C > S thingy was showing 1.3.3, now its showing 1.3.4, and i think everything works, ill check it out and get back to you if i run into any more problems.
Sry for bugging you

edit - ok i think i definitely got it:
even with new files, if i just drop them over fresh install, and then load a game, at first everything stops, game doesnt even register sector and universe traders anymore, ships that were ST and UTs in that save game finish their current order and then go on stand by.
However, if i do the Thereshallbewingsthingy, and reinit script cashes, both ST and UT appear again.
Is that how its supposed to work, or is it supposed to load right into save game? (1.1 patch game)?
edit2 - ok its been running for a couple of hours - i have maybe 10 total MK3 traders, i recalled them all (from all over the universe) and set them as sector traders with jump gate limit set to 5, in or around Argon Prime (high concentration of stations). I went from 80 million to just over 113mil. I dont know how that compares to normal UTs, but it seems good to me, not complaining. What is important is the following:
a.) none of them got bugged, you know, as in they park somewhere with 100% cargo and refuse to move on until i fix this manually which is super annoying ++++++++++++
b.) none of them had sustained any damage - in all fairness they are mostly in core system but still, im parked in one with SETA 10X, and at least 3 of them with me at any time, and ive had no collisions at all, which is better than what ive had before, maybe its just luck not sure if you changed anything there +
c.) damn they got smart - if i hated something about old traders it was how dumb they tended to be sometimes; if they were left in same system, like 3 of them would go for exactly the same dead, usually ecells, which naturally doesnt work, since the station being supplied can only take about 1 cargo load (anything more doesnt make profit selling for 14-15). Right now i have 6 of them in herons nebula, every one going for different target - didnt have this before ++++
d.) im loving the rename thingy, that switches from Your Whatever to MK3 Trader, however id ask you to retain actual ship name, so it would be like this: MK3 Trader Mistral. If possible, depending on what they are set for, it wouldnt hurt to have duty bit as well, so MK3 Trader UT Mistral, or MK3 Trader ST Mistral, if they are universe or sector traders.
Will leave game running whole night, so ill get back to you tomorrow with more feedback.