Let’s start a little discussion on whether or not players should be able to send engineer type units to each other. If no, then all build units would be blocked from being sent and factories that are sent would have the engineer in the build list removed.
However, if you are not able to send engineers the capture game mechanic would need to be reworked a little to make it easier to steal an opponent’s engineer. An option could be you are able to capture an engineer while an engineer is in a transport ship, once captured it gets beamed up to the transport ship so it can quickly escape. This makes players to be more mindful about where their engineers are reclaiming. Also, the capture time would need to be adjusted.
As of now it is too easy to just share all factions with all players.
This would be quite a big change in team games and there is a lot of meta round sharing units, however I kind of like the idea of utilizing the capture unit game mechanic more and have teams earn the ability to use other factions. Might be a fun mechanic to steal engineers from the other team in the early game rather then just being handed the unit.
Anyway just an idea what are your thoughts.