I feel your pain.
We have a 2013 Vibe 6501. Have make several small mods to improve function for us. Bottom line, it is a "Travel Trailer" and not suited for long term stationary camping. However, it is ideal for being on the road and sight seeing.
As noted on another thread, storage is limited. My first project was to replace the cabinet over the toilette with a slightly larger one. Moved the smaller cabinet to the hallway to the bed area, just to the right of the existing upper cabinet. I've only bumped my head once and my DW is short enough that it's not a problem. Then I added a large drawer pull to the bottom of the OEM upper cabinet to the right of the wardrobe. It gives extra space for hanging clothe (about 8 hangers same as the wardrobe).
Yesterday, I was checking things out in preparation for our upcoming trip and determined that the microwave/convection oven had dies. So I removed it and took measurements (11 1/8" high X 21 1/4" wide X 15 7/8" deep. Went to Walmart and found a 1000 watt Hamilton Beach Microwave with almost the same dimensions. Was able to transfer the face plate with no problem. The old oven had legs under it so I cut a couple 1" shims from a scrap pieces from a 2X4. Secured them to match the footprint of the new oven. Looks like it came from the factory.
And last but not least; I modified the Dinette Table/Area. I pulled the table and removed the slide assembly from the bottom side. The I installed a 30" high cabinet (from Lowes) against the front wall. I used the scraps from the slide to fabricate a box for the bottom of the table that would fit inside the top of the cabinet and raise the table to the desired height. Also made 2 metal dowel pins and a cross bar to secure the front end of the table while traveling. I removed 1 of the table legs and moved the other 1 back to allow for the cabinet door to open. I installed a 115 volt outlet in the side of the cabinet and plugged it into the existing outlet.
The table top still fits between the seats and works as a bed, same as before.
I have pictures to add. Thanks for your time.
TT = 2013 Vibe 6501
TV = 2015 Nissan Frontier.