I'm a bit of an old school gamer, so my views may differ a lot from some here. The major things I hate with RPGs today:
1. Linearity - I like a big open world to explore and possibly find hidden things. Also some aspects could be completed in different order to a previous attempt (and possibly give different results)
2. Slow, cumbersome small battles - This plagues close to every menu based 3D JRPG. While the earlier FFs focused on getting smaller battles out of the way quickly, it seems like a lot of time is being wasted in watching the realistic effect of the player walking right up to the enemy to hit them.
3. Characters that I cannot feel for - It's one thing to make a game dramatic by suddenly killing off a player or NPC, but if I have no feelings for that character to begin with, it just turns into a "Meh..." moment.
4. Inventory/Battle/Equip/etc systems that become overly complicated - I don't like spending most of my time in the menu configuring a new weapon or such. This is my main gripe with WRPGs, but I see more JRPGs are starting to head in that direction.
Once again, probably very radical views compared to most others. What I'd really like to see is JRPGs take a "2D revival" branch, similar to other franchises this gen (NSMB, Sonic 4 etc).
