Ok, Pokemon Stadium 2 is going to be awesome...but I hope that means Pokemon Stadium 1 will be there as a classic level since they are different. I really like diversity of the level. Ice for slipping. Air for Big Jumps, Ground for terrain variety....and we still have no idea what electric is...but I know it will not be a safe environment...or it could be all metal...for Pikachu.
As for Mario's FLUDD move, I was hoping when I saw that it would replace his Cape move, because now he will have two special moves that do little to NO damage, but are supposed to keep people at bay or avoid projectiles. Does Mario need to be that defensive oriented?
Overall I really like the FLUDD move though, I think it will add something for Mario. And his Spin Attack could be his Downward Air Smash now...or just Downward Smash in general.
As for Luigi, I do hope he has the Poltergust on him permanently as well. Though I would change his Down + B not to be the charge jump...Instead I would just give it to him if he docks with out moving for 3 seconds he can have the charge jump. It fits more with being game accurate.
Then I would give the suction move...as a tether attack. To keep him different from Mario, and also make him jump much higher than Mario.