Err.. The government didn't make the promises, the prime minister and a few others did, any 'bribes' as you call them, would have to go before parliament and be voted upon, but with goodwill, let us hope that some progress can be made, though it may come at a price for everyone; going more federal will be expensive for the taxpayer (as it is in say, Germany) and English MPs wont hand over more power without the concession of dis-allowing Scottish MPs to continue voting on matters purely English.