The champions league started in '92. Not only did it allow the Hun to extend the imbalance, but it paved the way for McCann to sort out the Tims, comfortable that some sort of return could be made.
Overall, the diddy clubs getting a one off windfall is a bad thing. Firstly, because only one or two will get it, and just as many will gamble and fail to get it. Secondly, because it perpetuates the myth that trickle-down works because we can give one example where it once helped a team temporarily. It allows people to say that if the diddy clubs just invested in better players and tried a bit better, or had more belief, then they too could have a chance at regular group stage football. We basically use the current scum arguments on those below us.
Most importantly, however, is that nobody is addressing the fact that European group stage income is completely unearned, undeserved and unsporting. It's very clearly a form of sanctioned doping - or cheating, for want of a better expression. The biggest reason that nothing will happen is that everyone involved - both industry and fan - is in complete denial about it. Admitting the problem would go a long way to solving it. That there's not a single journalist willing, or capable, of articulating it is a large part of the problem (I'm not picking on the BBC!). People like me that attend most games are also a large part of the problem.