In general, I dislike non-purposeful
mods unless they are slight or very tasteful, this means I don't like wild body kits, ground effects, slammed non-functional suspension, the biggest possible wheels crammed in the wells, etc. This stuff usually affects performance so negatively that it just defies belief for me that people drive around all day with this stuff on their car. I like tuning that actually achieves something, or just light tasteful stuff. When the rest of the car doesn't "back it up" it just ends up looking like a clown-car IMO. Like there's a guy on my block with a V6 carger, he's got all sorts of body kit stuff on it, caliper covers, a splitter with the little rods to "hold it in place", just ridiculous stuff. Also like how people will put giant alloy wheels on cars with dinky brakes and even drum rear brakes. It just ends up looking ridiculous without some decent brake rotor/caliper in there to fill the area. When I had my WRX, I didn't do anything to the outside. I did stuff to the engine and powertrain, but even the Borla exhaust was pretty normal-looking, not a bit fart-pipe like you see on some of the WRXs. That's where people would be putting outrageous size exhaust tubes that were far beyond what their actual HP called for...or any HP they could ever hope to get out of the engine.
So far, I have the simple side skirts (and mud flaps) to help cut down on any road crap thrown up by the tires, 8.5" wide aftermarket wheels with 255 tires (more traction), the black lip spoiler (mainly for the black trim that kind of matches my other car) and that's it. I'm on the fence about getting my hood wrapped like what my other car came with OEM, but giant spoilers, slammed suspension, huge splitters, widebody fenders...I just don't get the point.