Most I wanna max out now my MBP 13, maybe in one or two years from now when prices drop further
16GB RAM!
256GB or more SSD! I dualboot with Windows on my Macs so I need space for both.
Optibay! If only Apple had an option to remove the DVD drive for a hard disk drive officially...
and a Thunderbolt to USB 3.0 hub, I hope someone will manufacture this soon...