Probably difficult for anyone to give you specific ideas on what would be pleasing to you and within your ability to do or budget to pay for having done.
We are in the process of remodeling our second motorhome. Already replaced all flooring with cork, recovered headboard, valances, refinished table, new Flexsteel sofa, etc.
By doing the work ourselves, we have a nice coach that suits our tastes at a very reasonable price.
As far as ideas, probably start on "for sale" websites that have a lot of interior photos as well as exterior photos where you may see something that trips you fancy.
And, if someone has posted remodel photos or ideas here you want more detail on, just ask.
Brett and Dianne Wolfe
2003 Alpine 38'
Moderator, FMCA Forums
Chairman, FMCA Technical Advisory Committee
Member, FMCA Long-Range and Development Committee 2007-2009 and 2014-2015
Moderator, http://www.dieselrvclub.org/(FMCA chapter)