I must say I havn't played much of factions yets but what I will say is that ok some bugs do need to be fix but surly doesn't take the entire team to do that.
ANYWAY here's the list and why it should.
* Bring me back button, The creator of guild wars said himself in this interview that there would be a button on the login screen that if you do Lag out you press this button and Voila your back with your squad.
This should really be done asap its so annoying how ok yes Americans don't get lag but Europe still does

* Auction house or 'Improve Trading' Again this was said in the interview.
We all need this in ASAP Trading is crap its boring and very dull, for example you could have a Perfect fellblade and it would take you 3 hours just to sell one item! very very tedious.
I understand bugs do need to be fixed but as I said the whole team doesn't need to work on that. And these two ideas which they said they would put in well before Factions was coming out still havn't been put in yet.
I can't think of anymore Ideas that should Arena net said they will put in but havn't yet but im sure you guys can think of some.