I agree.. It's a good idea and it won't take space from the CL because there would be much less money involved then in the champions league. People will have it as another way to win silverware and it'd be nice to look forward to something if you don't qualify for the CL.
I have another idea: What about a 5-10 token bonus to whoever wins the cup/CL?? and maybe 3-4 for the league?