Having your own currency is not a special treatment at all - instead, the Eurozone is kind of an elitist club inside the EU that won't let everyone in.

The "British Rebate" (or whatever it was called) that guaranteed 66% of the British payments to be sent back to the UK on the other hand should be gone for good. Same for not being a member of the Schengen area or adhering to the rules concerning fiscal stability.