Counter 2 looks pretty useless in that video, not enough stun to do anything besides a grab.
Counter 3 seems to be okay against some slower smash attacks or moves which take long to come out, but I guess I prefer the normal version here.
QD 2 seems to be cool, helps him to recover, but I don´t like that is actually has more lag than normal QD, so normal QD seems to be better as a movement tool.
QD 3 I dunno what I should think about it, seems interesting, could have some uses...gonna try it out.
Eruption 2 looks cool, I like the little boost upwards in the air, could be cool for edgeguarding.
Eruption 3 well yeah doesn´t look that much slower for me than the normal Eruption, I like it.
Aether 2 finally some more horizantal recovery with Aether.
Aether 3 looks actually pretty bad, doesn´t move you forward, shockwave seems weak, the only good thing about it, is that it is faster.
Overall I like some of Ike´s custom moves, can´t wait to try them all out.