I don't think they will remove the limit, at least not any time soon.
Right now they have stocks of limited sky3ds which they need to sell (and geteway screwed them over, which means the sales are probably not going as planned, although I'm sure they're still selling).
But in Short :
If it was gateway 4.5 vs Sky3DS UNLIMITED, I would consider sky3ds.
Right now, even if they release unlimited, gateway all the way and personally for me, one of the main reasons is Region Unlock and Dev Menu.
Right now they have stocks of limited sky3ds which they need to sell (and geteway screwed them over, which means the sales are probably not going as planned, although I'm sure they're still selling).
But in Short :
If it was gateway 4.5 vs Sky3DS UNLIMITED, I would consider sky3ds.
Right now, even if they release unlimited, gateway all the way and personally for me, one of the main reasons is Region Unlock and Dev Menu.