So I wanted to consolidate all the current input on the new UI into one big thread, to help avoid duplicate posts. I will start this off, and edit the thread after every contribution. (preferably with a link to an RFE/bug report)
The Good
(stuff we like)
-I really like the DV and PV display. My only improvement would be to replace the current bars with a picture of a wooden shield and a picture of a platemail, and superimpose the stats over them. I especially like how the DV color changed with tactics settings - this is such a brilliant and simple way of displaying tactics, and is really handy, since I usually forget what my tactic are and have to check constantly.
-I like the scrolling message buffer for the most part. There are a few issues with it that have been addressed, but it speeds up the game considerably and makes for a smother, more immersive gaming experience.
The Bad
(stuff that's broken)
-Characters "swing" melee weapon and move forward when shooting missiles (http://www.adom.de/forums/project.php?issueid=3476)
-(Not sure if TB is joking about this one) The old UI is used when commanding a monster (http://www.adom.de/forums/project.php?issueid=3481)
-Numpad is broken in linux release (http://www.adom.de/forums/project.php?issueid=3482)
-The targeting interface is slightly broken (http://www.adom.de/forums/project.php?issueid=3485)
-Game takes too long to load (http://www.adom.de/forums/project.php?issueid=3495)
-The message buffer can overlap (http://www.adom.de/forums/project.php?issueid=3501)
-The game reverts to ASCII on first startup (http://www.adom.de/forums/project.php?issueid=3470)
-ASCII Mouse Movement is broken (http://www.adom.de/forums/project.php?issueid=3418)
-Wands of Monster Detection don't actually display monsters (http://www.adom.de/forums/project.php?issueid=3513)
-The font is broken for achievements (http://www.adom.de/forums/project.php?issueid=3515)
-There is a problem with duplicate cursors (http://www.adom.de/forums/project.php?issueid=3527)
The Ugly
(Stuff we don't like/ideas for beautifying and enhancing the UI)
-Conversations with NPCs are easily missed in the message buffer, and seem odd. They should be replaced with a pop-up window. (http://www.adom.de/forums/project.php?issueid=3473)
-The HUD needs to be more detailed (See conversation for http://www.adom.de/forums/project.php?issueid=3477)
-There should be consistent hotkeys throughout character creation process (http://www.adom.de/forums/project.php?issueid=3497)
-System message scroll bar has poor functionality (http://www.adom.de/forums/project.php?issueid=3507)
-There really needs to be a "notes" page (http://www.adom.de/forums/project.php?issueid=3440)
-Change the color of the HP/PP bar in UI (http://www.adom.de/forums/project.php?issueid=3529)
-Add mouse click functionality similar to "more" (http://www.adom.de/forums/project.php?issueid=3498)
The Fixed
(15 bugs and counting!)
-Ctrl+nd command is broken (http://www.adom.de/forums/project.php?issueid=3474)FIXED
-There is no way of checking your alignment in the new UI (http://www.adom.de/forums/project.php?issueid=3475)FIXED
-Ctrl+nvs &nvm commands are broken (http://www.adom.de/forums/project.php?issueid=3480)FIXED
-Reload prompt doesn't appear (http://www.adom.de/forums/project.php?issueid=3484)FIXED
-Traps interfere with mouse control (http://www.adom.de/forums/project.php?issueid=3488)FIXED
-Tooltip window won't close in ASCII (http://www.adom.de/forums/project.php?issueid=3491)FIXED
-Back Button is incorrect displayed (http://www.adom.de/forums/project.php?issueid=3503)FIXED
-The game freezes when you fire the last missile in your inventory (http://www.adom.de/forums/project.php?issueid=3486)FIXED
-Level ups are sudden and jarring. There should be a splash screen (http://www.adom.de/forums/project.php?issueid=3483)FIXED
-There needs to be a save/quit button for new players (perhaps looking like a open door graphic) (http://www.adom.de/forums/project.php?issueid=3489)FIXED
-There needs to be a better means of displaying satiation level (http://www.adom.de/forums/project.php?issueid=3477)FIXED
-Tooltips are confusing (http://www.adom.de/forums/project.php?issueid=3469)FIXED
-Remove introductory message on Steam (http://www.adom.de/forums/project.php?issueid=3502)FIXED
-You should be able to "mouseover" alignment display to see more information (http://www.adom.de/forums/project.php?issueid=3524)-FIXED
-There is no way of checking your dungeon level in the new UI (http://www.adom.de/forums/project.php?issueid=3478)FIXED