I don't mind the beige leather interior on the GTI but I think VW should provide more choice of materials / colours in general.
I'm not sure that the aluminium trim goes quite as well with the beige as it does with black / anthracite. Again, it's a very personal choice. It's great to see some different GTI's with different trims - it makes the model more interesting.
I like the very pale cream / lemon leather colours that BMW offers. A nice cream leather interior with carbon fibre type trim in place of the aluminium, matched with DBP or laser blue paintwork outside
But for me, the GTI has some heritage and I preferred the tartan trim which harks suitably back to the MK1. Even if full leather was cheaper than cloth I would go for the tartan as it adds to the charactor of the car. My father in law has an Ed 30 but even with the part leather, I kind of like the cleaner lines of my standard GTI cloth interior (which ironically following my previous commeny) has slightly less tartan on the seat base.