Crossovers did nothing to hurt this season. It's own structure was faulty. Fix that and all will be good.
I have to disagree, I think the crossover hurt Supergirl far more thanit helped or even enhanced the show. The other shows certainly benefited from "Super" fans tuning in, Supergirl not only was put on the back burner of the crossover, it took her away from her own show, not once but twice.
If they cannot figure out a way to use Supergirl AS Supergirl, not someone to be talked down to and put on the side lines when in reality (well as real as this can get...hahaha) she could do what all of them put together can do. So either use her in all her glory, or don't use her at all....all they did this year was use her to get "Super" fans to tune in. So sure, bring this character on to Earth 38, but unless they fix the crossovers by using Supergirl properly....then no thank you to more crossovers.
"A good teacher is like a candle, it consumes itself to light the way for others"