Ok, but football is not going back to that. I don't know why you keep talking about the past as if it's possible to return to that, it's a complete fantasy. The TV money and advantages the teams in the biggest leagues have now is far too great, regardless of CL money, interest is not going to return to the Scottish League. Nottingham Forest used to be a great team but that is likely never to come back, it's irrelevant at this point in terms of competing in the here and now. Football has changed irreversibly since those teams you mentioned were greats of the game.
As has already been said by a number of posters, the gap created is not solely down to the UEFA, and would not be reversed if they went back to the old system. The CL money would come nowhere near to bridging the gap. That's just the way football is now, plenty of people (like myself) actually enjoy this change, you don't .. that's fine.
Also, what isn't fair? CL teams dropping in to the EL has made it more competitive and added some bigger teams in to the mix.