If I really wanted it my way, I'd want a new BB Classic.OMGOSH a slider! I'd be there!
I definitely get what you're saying. As one user and buyer, you can only do so much!
But since I want the thing to succeed and find its place in this (stale) market, I'd prefer to give up on my personal preferred form factor for the good of the keyboard in general.
What I'm trying to say is that it's better to have a successful slider every year or two, whose keyboard provides a 7/10 experience, than a one-hit-wonder 10/10 perfection that sees no successor because too little people wanted a smaller screen.