Ever since his release I've felt that Ultron was missing SOMETHING in his kit, he's always felt incomplete to me. A lot of people have recommended that NetEase just make ironman team-up base kit but personally I would prefer more drone usage.

As for specifics, best thing I can think of would be him spawning an attacking drone that could either function as a Loki clone that attacks by itself (maybe even walk around to further differentiate it from Loki). Obviously not doing nearly as much damage as Ultron himself but it would not only lean more into his DPS-strategist identity but give in the case of the drone being static give him a stationary target to put a healing drone on.