Ayleid Steps doesn't add ruins to the world, just stepstones, so I don't think you'd see too many ruins.
The lost dungeons of AS are all submerged - or at least most of them, so they will not be like most ruins - you have to step to them.
Seems you should be fine.
Yes, Aylied Steps adds lots of Aylied Ruins, but they are "Lost Ruins", and as Psymon says (isn't that a game?
) they are submerged.
I'm not worried about conflicts, just worried that too much of the game will consist of Aylied Ruins.