Its too long ago for me to remember what it was really like but the Alfa always seemed a bit strong with the servo assitance which could make another car feel like it needs more muscle for a response, also the pads on the Coupe gave very little reaction until warm, you'll have to drive a couple for a comparison.
Dings, scratches and chips etc in the bodywork become an a bit of an annoyance but any car that does a few miles is going to suffer, you are not looking at a new motor, blimey even my GT is peppered with chips and I have only done 26k, the lack of side bumper strips means that whenever you park next to another car you are likely to get a ding, typically family motors parked next to you are the worst offenders.
The draw of the GT was that in a lot of ways it reminds me of the Coupe, even down to how it drives, of course I have the diesel so none of that warp speed 3rd gear like the Fiat but the feel and shove of the car has a lot of parallels though despite your opinion I don't think any Coupe has had a compliant ride, perhaps the owner is has low tyre pressures or something as the Coupe bangs and shakes over most potholes and rough surfaces, some of the noises it makes make you wince even though its normal
Interior rattles in the Coupe are a bit like the GT too, there one minute gone the next, real nightmare to track down
Can't really say much to sway you toward a GTV, its not as good as a Coupe but some of the things you mention are purely cosmetic like the brake calipers etc. The GTV roofline is low so whilst the seating position isn't that high you feel like your sitting on top of it.
Of your remaining list the astra and Pug were in my list when shopping for a good coupe, the Astra Turbo I could get new for £14k at motorpoint when the others I was looking at were £15-20k secondhand, the Astra can't come close unless you like a raw wheel tugging, torque steerring menace, the 407 was a bit yawn, obviously I bought the Fiat and felt that after Driving that the Astra and the GTV £13k for an LE was a much better proposition that the Astra despite having less warranty etc.
Not driven a Hyundai so can't really comment but its a bit down on the power stakes for what it is. BMW might be alright I have not had too much experience in them, only short drives but it never sparks any interest, might have needed more time to appreciate it, though I was driving the M3 in California and you'd think right away the power would impress but only the last few k rpm had any craziness, I'll try one again one day though as you can't find a decent road in San Jose, also my mate told me I couldn't rant it too much as he'd been done for noise pollution or something equally stupid twice already when out playing at night
Don't think a 328 with light any fires right away though based on that.