I think this would be great and get more people into breeding and maybe stop some of the hackers, etc. I started breeding for IV's this gen and it was a pain trying to use two of the same pokemon and trying to get better IVs. Best thing that ever happened to me (pokemon wise) was getting a 6IV shiney ditto. I wish everyone had one.
Breeding for egg moves would still be there. I like breeding. I like the satisfaction of putting some time into a set I want to run and finally getting that 5-6IV mon with the right nature and egg moves, then EV training it to perfection. It's a good feeling. Spending an hour or two for one mon is fine. But more than that is very frustrating.