I'm a little confused as to your position as your TT wasn't practical enough, although you don't use the back seats? It was also too expensive although you only commute 7miles to work?
I therefore suspect you mean it was expensive due to parts / work being higher mileage rather than fuel costs? From my experience, the Brera's (especially the bigger engined petrol ones) are not holding their value well so you should be able to pick up more low mileage metal for your money than something like a TT, thus, helping offset any work which may be required.
The 'S' Brera's have awesome looking 19" Wheels - they're not so awesome when you need to put rubber on them, especially not within a budget.
Practically, the Brera has a pretty decent boot and the back seats (folding) are usable if you're prepared for a few unconfortable journeys on the occasions you're fully loaded. Including driver, mines housed 5 adults once and often three adults and two labradors. Comfortable, no, but most of the time its only me so worth the occasional hassle. I haven't heard of any roof bars fitting the brera and there are no (or few) cycle racks for the back if that impacts your practicality.
The 3.2 does have a higher VED and lower fuel efficiency, but the difference is maybe not as much as it would appear on paper (so I understand from the 2.2 owners).
A mate has a 2ltr Blackline GT which looks lovely inside and out, however, it may not have the build quality you desire.
So, the Brera is an awesome looking, typically well screwed together and exclusive car which is good value to buy - I would (from experience), be conscious of running one on a budget. There is plenty of faster bang for buck out there - very little in the way of more style for buck. HTH