I don't think placing rear ladders will help much - getting into the components housed in the wing areas is easy, getting back out via ladder is the bottleneck, just adding another ladder gives you a choice of bottlenecks, given that engies will probably be hovering around the components in the middle or gunning, it's rare that you have to spend any length of time on the turning engines. Making the jump from rear turning engine platform onto the turning engine cowling more reliable would firstly make you chose between the slower ladder or running to the rear jump point and secondly be in keeping with the hidden engineer courses that all ships have, except the current incarnation of the Mobula.
Just out of interest is is possible to make ladders across the board responsive to jumping - ie you can jump onto them to start climbing?
Also adding team colour pennants into the visual area of the captain on the Mobula would be very helpful.