Same with fair, except uair gave a bit more of an advantage. Uair was like reactable advantage rather than just frame advantage.I'm pretty sure adding more stun to samus's Uair won't hurt. IIRC it gave frame advantage to the one getting hit in SSB64.
Things that annoy me with Samus:
Above stuff
Usmash use is severly diminished by its start up lag.
People DI-ing out of up-b.
Down B taking double jumps
Down B taking a while before Samus can do other things.
Terribad grab but acceptable imo if DI-ing out of up-b becomes extremely difficult.