Outdated stuff? The Rebel Alliance?
Their fighters have SHIELDS AND HYPERDRIVES, TIE fighters and their variants don´t! How´s that outdated?
Well the X-Wing was top of the line but it was originally meant to be an Imperial fighter but the Rebels stole the plans. Almost everything else, though, that the Rebels had was outdated, Y-Wing, DF.9 anti-infantry battery, and Corellian corvette just to name a few, they used whatever they could get there hands on. But what is more important than the old stuff is the fact that The Rebels had to keep there stuff working with whatever was available. Hence keeping things together using Duct Tape.
Going back to the OS, I think a repair ability called Gerry Rig for a unit would be really cool. It wouldn't really restore health, but instead fix any broken parts such as turrets, engines, and tracks immediately.