The first one, is that players are less encouraged to roleplay because they feel they can only choose from options on their character sheets.

I deliberately try to have sessions which have little or no combat counters to stimulate more roleplaying.  I also have at least one player who's pretty imaginative and I appreciate his efforts, flying in the face of the character sheet.  If he wants to do something crazy that isn't described as a power, we usually just work out what rolls he needs to make and bake it up on the spot.  That's OK, but not everyone is able to think outside of the character sheet like that.  Anyway, this isn't my real beef... I manage this aspect of 4th Edition just fine.

My main problem with 4th Edition is that there is nothing simple about characters now.  Even Essentials characters require you to reprint the entire sheet and power-cards when someone levels up or gets a new item.  This is expensive as I feel compelled to print in colour for maximum effect.  It is also time consuming, both in the time spend by all updating their characters and then time spent by players understanding them.

Actually, I think this was a problem for 3rd edition too.  I certainly receive a new character sheet from my DM every time we level up, but usually that's one or two sheets of paper, not 5 or 6 and in black and white, not colour.

Solutions like iPlay4e are great, of course, but I don't like having computers at the table and not all my players have or want to use a tablet.

Apart from 3rd and 4th edition D&D the other two systems I play regularly are Savage Worlds and Warhammer Fantasy Roleplay.  I've had the same character sheet since the start of both games and have been playing them for over a year.

So after April (when I return from my Japanese holiday) I will be taking a hiatus from DM-ing D&D 4th Edition and picking up something else.  Clearly, anything d20 based is out.  Savage Worlds springs to mind but I recently introduced player rolling to my D&D game, everyone seems to really like it and I wouldn't get that from Savage Words.  

What I need from a system is:

- a focus on having players make the majority of dice rolls, i.e. for attack AND defence, and the usual other stuff

- simple character sheets, i.e. when levelling up or advancing it should be easy to update the same character sheet

- not be specific to a single setting

- scalable ... if the PCs are fighting 1 monster or many, it should be "fast and furious" (nods to Savage Worlds)

Suggestions welcome!