There should be a place where us players can buy/sell our old elites and unwanted parts. For starters, this would allow late-game players that bought a low-tier elite early on in the game (I bought a Shark T-4 with the credits I saved up) and be able to make a profit off of it. Also, this would allow newer players to buy a new bot, to get better forces. Also, we could sell/buy parts of elite bots so that anyone who needed them could build more bots easier. The only currency that should be used is credits, since both parts and elites are either bought with them or are worked for. Players also should be able to set the price of what they are selling, so you can make a profit without a pre-set value.
NOTE: Add a building for this, too.