I've been watching 1990-91 ICW/IWCCW discs and cataloging them. Lots of fun stuff, but from what I've seen, the alignment with Kevin Von Erich in 1991 really took the promotion down a ton.
Keep in mind that this happened after a lengthy hiatus where they aired two months worth of a "Fifth Anniversary Special" (literally they ran their anniversary special for two months, showcasing matches from the past and a few current promos and matches here and there), and then the reboot in January of 1991 was done again with older matches from the year previous, so the promotion seems to have been mostly dead by then anyway, but it comes across as the ultimate treading-water situation.
I suppose it is more noticable watching the weeks roll by outside of real time, but anyone that was watching that promotion week-to-week at the time would probably have gotten pretty frustrated with it by early 1991 and jettisoned it from their TV itinerary.
Side note: This show seemed to run back to back with the AWA TV show, which was pretty much the same thing in terms of being on hiatus, but at least the AWA would stretch out a TV taping over a month or two and keep it at least looking "current".
It might be the ultimate death-knell block of wrestling TV ever when you think about it.