At the moment most other parts of the game arn\'t in so as a chatroom (and possible MMO) here is what i think.
The graphics are nice! Whilst there are definitly better engines out there (the skies in Dragon Empires look amazing) this one is really nice i think. It\'s like the difference between UT and UT2003. UT2003 might be technically better then UT but UT just looked really nice.
That\'s what i think about Planeshift. The game looks nice.
Buggyness?
As there arn\'t many features it is hard to tell but the stability in Planeshift feels good. Whilst running UO (especially on third party servers) Everything feels like it is going to crash all around you

So the feel of the game was nice.
Ease of use and the GUI?
This i think should be improved even as a chatroom. (though this could all be because I\'m a newbie

) The mouselook key being here ># Is not nice It\'s in the middle of the keyboard, far away from everything. So being able to map keys would be a really nice feature.
Really I think the whole GUI was not that amazing. Another thing is having to click on the chat thing before you can talk. There should be a key that exits out of chatting and into it. Really I think SWG have basically Aced the GUI. Having the options of FPS, EQ and SWG is good. And I much prefer UO and SWQ\'s way of just typing and the text goes into the box. When you are running around and you meet someone, you have to stop, get it off mouse look, click on the tiny box and then start typing. In SWG and UO you just type.
Other features of other games like SWG and Neverwinter Nights are all good. like Radial menus, being able to highlight things, targeting (which is in), Ctrl and a key getting you to a menu screen, Comic book Chat boxes appearing by the character so you don\'t get a scary mute avatar whilst talking to someone. All of SWG and NWN is good.
Also I think speaking to npcs is easier using the swg and nwn way of clicking sentences rather then having lots of I don\'t understand what you are saying. I don\'t know how roleplayers feel about that.
Also the character creation did not have much, but that is obviously because it is pre alpha.
Summary of what i thought:
Grpahics are nice, The world and city looks nice and the feel of the game is excellent, even when you fall through the floor the game doesn\'t seem to crash. However the graphical user interface needs work and SWG is the way forward i think.
(Sorry It\'s late at night. Forming sentences hard is :S)