The only thing holding me back from buying an iPad mini is the "horrible" screen.
A6 and more RAM is a higher priority for me...
Besides retina is likely to introduce longer charging times and poorer performing battery.
Only if it had a processor as good or better than the iPhone. I still don't understand why they put in a processor two generations older than the iPhone, in the original mini. They could put a retina screen in it and if no better processor I still won't buy it. I've stayed with my Kindle.
Put 2gb in and I'm sold.