That’s rather sad to hear, especially considering why most of us are in this to begin with. Most here don’t want to have just another car on the road, we want to have our car on the road that’s made the way we want it instead of manufacturer. More power, darken the windows, change this, improve that etc.
I’ll venture a guess and say that most of the time you tinkered with the Maxima wasn’t out of necessity to change something but out of desire to change it and make it your way. It’s a hobby just like anything else and you look back on it having typically rather fond memories or good stories of fails. (Bad decisions make good stories)
Keep in mind there are plenty of very subtle ways to improve the looks of a stock new car without doing anything drastic or changing the way the car feels.
Wheels will not void your warranty unless the dealer really wants to be difficult, plus typically you can put the stock ones back on prior to bringing it in. If this is your year 'round DD it’s not a bad idea to get a set of snows for the winter on stockers and have nice tires for summer on other wheels.
If nothing else you can always just powder coat the wheels to give it a menacing look being more black out or gunmetal.
Doesn’t it irk you just a little bit passing another M35 looking identical to yours? (Besides tint)