It's a good idea, and I don't feel like it's overdoing it either. I also think it's not going to happen. KI is trying to make it easier for us to get energy potions by being able to craft a few (for those that are lucky enough to get hatch peppers). For them to outright have unlimited pet training for a whole weekend.
It seems if this new event were to take place, it would limit the use of energy portions; potentially backfiring on KI's original intention of making the portion more affordable in a way.