Ana has WAAAAAY too much in her kit to not take her.
I like Moria but why would I take Moria if Ana is available? (if Ana is picked i’ll take Moria and when she bio nades the group I mass heal for the win with healing spray and heal ball but still that’s ONLY if shes already taken)
Ana can shut down alot of ults with sleep dart, can shut down healing with bionade, and can reliable heal from a distance (something Moria can’t do diddly other then throw a slow moving ball at a far target and hope they are still near enough to get some heals) ATM shes one of the best counters to BoB coming out is to sleep him and then bam hes useless for most of the ult timer unless your teammates wake him.
Oh and lets not forget that her Ult is basically making the Weeaboos love her because Nano + Dragonblade is an oppressive combo.