Normally I’d do Hulkling since my focus is BGs but I’m torn because of the next progression title most likely being tied to 7 stars.
Luckily I do have a shuri that I’m targetting to r2 but if the next title requires more than one r2 , then I’m out of luck as my 7*’s arent the best. (Unless i do Gorr over Hulkling)

I have no r5’s either, Hulkling would be my first.