I finally unlocked the last of the custom specials. I really wish customs were handled differently... since they take forever to unlock and are somewhat of a hassle to set up, it's not super likely that the tournament scene is going to use them. Which I think will make Smash 4 tournaments a lot less fun to watch, hurt the balance of the game, and remove a unique point of interest from the game altogether and leave it as Super Not Melee 2. Wish they could have been bought in an in-game shop like trophies or simply been all unlocked from the start, and players could choose their custom moves when selecting a character like vehicle parts in Mario Kart 8 or assists in Marvel vs. Capcom.
But, I guess it doesn't affect how I'll play it all that much. Pretty much everyone I've talked to and played with thinks custom moves are totally fine and equipment has no place in multiplayer besides taunt matches. And a fine thing, because Greninja really needs some of his customs to be better, if you ask me. Default Substitute's window for activation is so short and the counterattack is so slow that it's liable to miss and can even be countered by a much better counter move like Counter or Vision. One of its customs is even slower for some reason. The last one is not a counter, but is more like a sidestep dodge that explodes! This, I think, is even better than a counter move would be, because it will activate even if Greninja is not attacked, making it harder to punish. I wanted to use the default Substitute because I love how the dinky little green plush is accurate to the games and everything, but I had little success with it and eventually stopped trying. Switching to Exploding Attack gives me a reliable option I definitely didn't have before.
For other characters, I like... Lucas's PK Thunder/Freeze/Magnet for Ness (Freeze has actually scored me a real KO or two, I think it has some edgeguarding application if you time it right and your opponent is real real dumb or has a predictable recovery), Decisive Monado Arts/Power Vision/Back Slash Charge/Advancing Air Slash for Shulk, Fire Arrow and Time Bomb for Toon "Litterbug" Link, never ever the defaults for Mega Man...