Yes he is a great support

Yea kinda he won’t link great but if u replace the int goku vegeta then yea he should fit

But would it be better to keep it as it is or to put him in there

I think so mine in jp has lvl 10 links and having about 4 active gets him in the 5-6 mil attack stat

Not great links but replace agl transforming Goku if you want him on the team