Aerial drive works wonders at max. Mine is not but I actually asked this before and was advised to use Aerial Drive.
Dunno if you have CE’s like Another Ending, Victor of the Moon but if you have those MLB & maxed they can be quite impressive in terms of damage especially since they cap at 2400 attack.
Painting Summer is not going to replace Sumo CE but it is good for Arts loopers.
Royal Icing is also very good but lacks the NP charge.
One Summer is a full HP based CE while the effects are good, the lack of attack stat is not. // I often see this Ce paired with Jack, Okita when Masters lack MLB Imaginary Around. Knights of Marine is another good Ce if you have it.
I’m not sure if the non mlb copy is comparable to other CE’s listed. Probably not if they are MLB. But hopefully someone can clarify as I don’t have a single copy of Sumo Ce sadly.
In most cases Aerial drive is going to hold up. I don’t know if you have Holy Nights supper MLB but that CE is still great too.