Have you tried playing it, it should be fine. It sounds like a slightly loose chip at the front to me (the chip is located there in the older versions)
Works great on AKAIO as well, but for some reason it changed my skin and when I try to change back it won't let me, giving the error message "You cannot get rid of pure awesomeness"
If you are talking about the ninendo licensed ones then no - the 3D effect remains.
3rd Party ones shouldn't really affect it either, as long as they are not the very cheap kind, which are known to have strange effects at certain angles.
The x10 mini pro is completely moddable and quite decent. I can say so as I have one myself
however at that range you could also look at the HTC wildfire or the moto flipout