New leafs on an old tree

Normally, all the VAV controllers in a project are sent to the VAV supplier. In the factory, an enclosure is mounted on each VAV box. The base of the enclosure contains a transformer and a controller directly coupled to the damper shaft. As showed in the top picture, I've seen 2 types of enclousure (base+cover) so far. The left one is with just 1 screw, pretty difficult to put the cover back. The right one is with 4 screws.

In order for site people to see the damper position /check the network connection /replace a controller, the cover of enclosure has to been removed and put back on complishing. A lot of time is wasted without any production. What I suggest is to remove the whole enclosure system and expose the controller, or decrease the size of the inclosure just for the trasformer. Now the design such as the position indicator of the controller is meaningful!.