Well, I can understand that. I've got a lot of units I've been holding off doing anything with fodder-wise because I'm just not 100% sure what would be best.
Ironically I took the opposite approach to Grima's IVs than you. My first F!Grima was +Atk/-Spd. Three Grimas later, and I swapped that out for +Spd/-Atk.
Really eager to get more merges and hopefully better IVs on her, but right now my dragons have to be put on hold for something with greater priority.
Anyway, looking forward to seeing more of your dragons. You've got some really cool stuff to work on, I'm sure.