just a few ideas that sprang to mind

*Game Clock
This is a very useful addition to the game, but could be more helpful if there was also a drop down menu when hovered over to display other timers, with a individual symbol rather than a full title for each timer, so something like
-a spanner to represent time until you can repair
-some planet image (maybe the logo for a failed scan attempt) to be time until you can share again
-planet or cluster missiles to be time until next invasion attempt
-maybe a mini calming amp to be time since last hostile action, going up to 24 hours rather than continuous timer for non-pvpers, so when it reaches the 24 hour mark it can change to something like "pacifist" or something similar.

*Semi-annual competitions
On some other games i play there are competitions every now and then for everyone who plays the game, so something like this could be fun, with different competitions focusing on doing different game aspects (such as pvp, pve or even base combat stuff). These Competitions could have different rank margins (0 to 150, 151 to 300 etc) so that everyone gets a fair chance. Prizes could vary from special modules to new designs/titles or even having one of the battle market items given for free. If it was a competition for killing bases the margins could be focused on the legion base's level, and could reward a prize to all members of the legion, or could add % towards defender bonus if the base had been disabled, or add ability points to replenish those that had been used. However, if a player/base levels up into a new margin they could be moved into the next tier but keep the success that they have earned for while they are in that group. If a prize is awarded to someone they could possibly show this by having a new medal (admittedly maybe worth 0 points) just displaying the name of the competition they won and when they won it.

*Legion Base Avatars
After seeing a post earlier this week about the sha'din hyperport schematics, i got thinking about a new thing on a base that enables members to donate energy, minerals, em, ctp and even political favour to some form of architect so that they can unlock a new base design in order to keep a variety amongst legions. As high level bases do cost a lot to upgrade the cost to try designing a new avatar would be kept within reasonable levels. Maybe if there were different avatars added, it could be like the CT lab and you don't know what avatar you get next.

*Medals
Being in a legion, you want to compare you to other members, maybe to see what ones you have yet to unlock, or to help foster a friendly competition between you and someone else (i know two people in my legion are competing to see who can unlock Taltherian race first), so maybe having a compare medals button either beneath the legion base button where you can enter the names of two legion members (first one being yourself) or even where you could enter the name of you and a friend in a different legion.

+1 some good ideas here.