Multiple abilities could be good, yet could be bad. I could see a lot of problems for some pokemon. I could see a lot of greatness out of others.
Obviously though you will have some claim "no it's fine the way it is and would just make things crazy" but I say it would be a good idea, and could def help some weaker pokemon strengthen up. Along with fix some discrepancies. Nothing irks me more than Beedrill hit by earthquake... lol
Pokemon Black FC: 3653-9864-6035 Pokemon White FC: 4641-8614-2897 (5th Gen Edits only)
I never said a Pokemon should learn any ability the trainer wanted, just abilities that make sense like Magnamite and Levitate (serious oversight on GF's part). Obviously a Kyogre could never learn Dry Skin. Nor should a Croagunk be able to learn Drizzle. Just like how a Pokemon can't learn just any move.
Bazinga! *dives into ballpit* Pokemon Black Friend Code: 0605-2800-9952; Trainer Name: Solace; First Pokemon (roleplaying): Shiny Umbreon