Youre worrying about never scenarios. What do you mean what if something happened to you wheels in the future, and why would they not include the cost of a rental car in the repairs?
Honestly you can do what you feel, ive been through yiur situation here with a set of wheels worth 3500, so I know what you should be worrying about and doing to get it resolved, but if all you keep doing is worrying about getting from a to b, and cant think to include a rental in the repair price, and then wondering if your wheels are going to suddenly blow apart from minor repairs, then there isnt much else to say. It sounds like you have your mind made up that you want brand new wheels for what is basically minor damage.
Its not unheardof for a judge to rule in favor of another party because one was being unreasonable. Or he may just rule they only need to take care of cosmetics up to a certain dollar amount.