I'm a non-technical user, and I've never used ysnippets, but I'm willing to give it a go with some proper instruction.
I do see the argument of both sides.
Here is a question: I see specialised snippet packages in the ELPA respositories. Is it possible to provide snippets that reproduce the existing "Easy Templates", maybe even keep the same key bindings so that the change is transparent to the users that are likely to have the troubles referred to by Bastien?
It is a genuine question since I have no idea of the problems involved.