Firstly, Rheinland Engineers CAN build it in 2 hours!
As for the rest, i think its kind of ok, i alwaysed used to log off that char after death or escape and change the sceenery, but then you think, hey how about playing that char *looks to the watch* oh not bad idea, no 4 hours gone.
And beeing back as soon as possible is easy, just go to the next system and wait, until your killer has left (will happen in less than 2 hours most of the times), so not problem there either.