Readding Prototype Engine areas to rotation map standards

[cheekybrdy]

Prototype Engine areas are off-station same Z-level spaces with an alternate engine which is broken and disconnected from the station. Adding these back into rotation could give engineering more endgame options, which on some maps is rather lacking depending on the engine. Considering that alot move to mechlab the ability to repair and attach a secondary engine could be a worthwhile incentive for engineers to stay on that side of their job. Adding back a relic and readding a advanced passtime doesn't seem bad, is there any reason these stopped getting added which would need to be considered for readdition?