A series of simple, easy ideas to make the game more convenient to play.

System Management

Preview Improvement Effects

Show Systems' Flat FIDSI and Multipliers

Show Planets' Modified FIDSI per Population

Preview FIDSI Change when Moving Population within System

Show Approval Over 100

Ship Design Management

Upgrade Ships to Other Blueprints

Rename Ship Designs

View Design of Owned Ship

"View Design of Owned Ship" -- actually, you can already do this. From the F5 military screen if you left-click an individual ship in the "Ships in fleet" panel, you will see the design in the Ship Overview panel and you can mouse over it to see the modules installed. You can even see the modules in minor fleet ships you own this way.  For ships you have built (not ships from minor factions or quests) you can double left-click on the "portrait" for the individual ship (from the F5 screen or from the lower left panel when you have a fleet selected when in the Galaxy View) to bring up a "read-only" view of the ship in the ship design screen.

"Upgrading Ships to Other Blueprints" -- there have been a couple other ideas for this in the past, unfortunately they haven't gained traction (253,700 points for Allow ships to be upgraded to any design of the same hull type). Rename ship designs would be good improvement in lieu of flexible upgrading.

It would be great to get a preview of improvement effects, and I like the other ideas for showing FIDSI change. The tooltips could use some improvement, as currently the effects that change FIDSI are displayed inconsistently--for example, the tooltips show how much industry you get from Xeno-Industrial Infrastructure but not how much you get from Interplanetary Transport Network. A lot is hidden in "+X industry from population," so you can't easily see how much your buildings are helping.