I've mentioned in my indepth thread some concerns about the UI. For a more productive discussion, here are some the specifics. Apologies as this will be more of a stream of consciousness and not as well organized as some of my previous posts.

This is for version 1.0

• Currently the "rearrange" queues where I can slide buildings or units around to change their order is so cumbersome I actually consider it a bug. I will often have to redrag and drop 4,5,6 times before the system will accept my new order.
• There is no easy way to determine which of my many starbases is missing a "core module", ie the mining/culture/military core ones.
• To change an asteroid base to a new owner, I have to click each and every single asteroid, click a button, and find the planet and click on it.
• Often the system won't let me click on something until I greatly zoom in on it, adding more tedium.
• There is no easy way to determine which civ has which resource for trade, so I have to click each and every one until I find it.
• Rally Point Creation: I have to go to the stardock, click the rally point, click a new rally point, then tell teh system that is the rally point I want. But...if I want to rename the rally point I have to go to the rally point, click on it, then rename it.
• I would like to see the adjacency boosts for special buildings in their screen, as opposed to only seeing it when I build it. For example, the legal offices building doesn't look at that great, honestly barely worth the effort at its base. Then...you realize it gets a -5% crime per adjacency, hold the phone, now this thing is great! However, if I had never bothered to check it, thinking it was "worthless", I would have missed out on a great building.
• A ship with a survey module can't be told to autoexplore
• All of my fleet functions are there when I click on it....except decommissioning, where I have to double click on the ship. I don't mind a warning screen here but I should be able to do everything from the same general area.
• The only place to see the cost of a tech is when you select it, and it appears in the lower screen with details. No reason I shouldn't be able to see the cost on the main list of techs.
• There is no means to organize my research path. For example, in Old World I can select techs for priority. On the research screen, there will be a little icon under a tech that tells me "this tech will get you closer to your priorities". Right now I have to keep checking the navigator.
• Techs that are in the same grouping have different colors. All techs in the colonization area (aka ones that could come up if I prioritize colonization techs) should be the same color.
• With so many resources in the top bar, it can hard to remember what you don't have. All resources should be present, with a 0 for the number, instead of it removed from the bar entirely.
• I can only rush one unit/building a time, forcing me to come back to the planet over and over again for multiple rushes. No issue with only 1 rush unit coming out a turn, but I should be able to rush more than one.
• When I build a terraforming upgrade that gives me a usable tile, I want to be able to assign a building to it before its done. Otherwise I have to come back to the planet again when its finished, more tedium.
• It would be nice if Trade Ships had some color differentiation on planets when you click on them, to show planets you already have trade with. This can save you a lot of time if you send a ship to a planet just to find out you are already trading there.
• Would be nice to have a buy 10/sell 10 option at the market.
• Diplomatic Credits should be able to "auto fill" to complete a deal just like credits.
• When I add 3 of X resource to a deal, and want to remove it, the only way is to click down all 3 to 0. There should just be a remove option.
• Commonly I will have a planet's stardock just make supply ships and send it to itself, to speed up construction. It would be nice if there was a button for this, as right now I have to set the ships, make the rally point, set it up infinitely, etc etc.
• There is no create a fleet button. Sometimes I have to awkwardly move ships around to get fleets set.
• The faction screen highlights the key traits for a leader when they are placed there, it would be nice if ministers did the same.
• It would be nice on the colonies screen if the colonies with a special resource were highlighted in some ways, instead of forcing me to look at each one to see which ones have special resources for colony modules.
• When a planet is culture flipping, I would like to see a number of turns for the flip to complete (similar to how invasions work). The "3x culture" is not really that helpful.
• When I click on a colony world's core resource (like research) and I see the bonus from a colony, I want a breakdown of where I'm losing yields from that colony. Pollution/Crime/Approval/Decay, etc.