I have a few suggestions. If some are implemented, just let me know.
1. Allow a zoom/mooz on the main map. It's nice at first to have everything so large so it's easy to tell what's what, but I find myself wanting to see more of the galaxy at a time, rather than having to scroll around so much.
2. Have an 'all planets' screen, with filters available by 'class', 'colonized' or not, 'in system with colonized planet', etc. I forget where the planets are I'd like to colonize, and I don't like searching around for them.
3. Have a colonized planet summary screen that includes income and payments, research, military and social production, etc, sortable by all these values. The current summary doesn't show all these things. Also, it's a pain to scroll through all the sorting options at the top. A drop down list would be much more convenient. If possible put the list in the main screen such that each planet takes up more horizontal but less vertical space, allowing more planets to be seen at a time per screen.
4. Being the micro-manager I am, I like to know such things as how planet class affects max population, pop growth, etc. Similarly effects of morale and growth rate. Same comments for spending on espionage and destabilization. About how much should I expect to spend to achieve what results? What other variable does it depend on? How is a planet's income determined, ie the base amount which I tax? I'm not asking for the exact equations, which probably depend on quantities I won't know as a player, just some idea.
5. The tech picker screen shows advances and projects possible with a particular advance. These lists should be hot-links to tell you what these things do.
6. Military project build queues.
7. A planet seems to remember that you partially built a social project, but switched before it was finished. Some %complete indication might be helpful in the build pick list so you can get back to it later.
8. The initial registration window of SDC has a place for a 'nickname'. I first put 'Bill', but it kept giving me an error with no reason. I tried a similar thing on the website, and got the more informative message that 'Bill' was already taken. I removed the nickname and all was fine. You should state that the name or nickname must be unique, and say that that is the problem if it occurs during registration of SDC.
I've just started one game (kept me up till 2:30 last night!), and I think I'll like it a lot, but I often feel like I have to work hard to get the information I need to make decisions. I'm confident that this will improve with time, and hope my suggestions work toward that goal. Thanks!
Bill