I'm 12 months in with GTI 230 DSG.
Seats - Mine is tartan so not sure on Art Velours but quite a few on here have them, not sure if they'll be able to comment on wear as will be max about 12 months old. I really like the std interior and no issues with it so probably wouldn't pay for AV and not keen on the leather either.
Brakes - GTI Performance has the upgrades brakes and apparently very good so unless you are taking it on the track not sure there would be any point upgrading further. I recently did 500 miles round wales in my std GTI and never once felt the brakes were a problem - warm weather (20 + degrees), twisty roads, brand new tyres and we were making progress as they say..)
Colours - as far as I know don't think you can do special order paint, certainly not on the configurator and would be surprised if a dealer would offer this option so I'd think you'd have to sort that out after or wrap. Uk colours are very limited - go on the german config and there are loads of interesting (and very expensive) colours to choose from.
Thanks for the comments Jim.
I don't have too much of a problem with the standard interior, just wanted something a little more subdued and rather liked the hex grill pattern brought on to the seat as a subtle tie in.
Yeah, I doubt I'd track the car but always like to have decent brakes although I've never had an issue with the standard ones on any of the other GTIs or GTD I've owned. More a question as I remember in the 7 when you could spec the performance pack as an option.
Just had a look at the DE site. If you like blue, you're laughing when it comes to choice it would seem. The pricing is a bit steep on a few of the colours, in the league of specifying any choice in the VAG colour palette. If you push hard enough, they'll do what you want. I just thought they might be a bit more forthcoming with the option. I know that Porsche dealers don't actively promote it as it causes delays in production which means it takes them longer to get revenue in.
Sounds like you've been enjoying the car - anything else that I should know or be thinking about in your opinion?