If shopping for an RV I would not even bother to look at a RV that had been "molested" with such modifications.
Replacing converters with newer multi-stage ones... OK, adding a EMS system when done neatly... OK, replacing a low end vent fan with a top of the line Fantastic Vent or Maxx Air... OK, Swapping faucets to better quality or single handle, again, OK when done properly.
Even conversion of a jackknife couch to a Futon style using the same mechanism but replacing the frames/springs/upholstery... OK (as long as old parts are saved).
Major re configuring of the interior.... Sorry, I would not look at it. Besides, I like a dinette
I'm just that way,
Charles
'03 Ram 2500 CTD, 5.9HO six speed, PacBrake Exh Brake, std cab, long bed, Leer top and 2008 Bigfoot 25B21RB.. previously (both gone) 2008 Thor/Dutchman Freedom Spirit 180 & 2007 Winnebago View 23H Motorhome.