I have made a couple mods.
1. In stalled manual step.
I would like to find an automatic step but the extra outside depth below the door is an issue.
Also installed struts to hold dinette seat up when accessing storage.
I plan to add one or two struts under the bed access.
I will have to remove some of the top plate in the first picture for the strut to fit. Will add additional vertical support below and to side of where i notch top plate.
You can see the top of the water pump in that picture also.
I also made a filter for the heater return. Having two dogs needed to control the hair getting to the heater.
This is the back side of return. There is still a one inch plus opening at the top when installed so I do not expect much restriction in air flow.