Well...Temple Meads isn't exactly smack in the middle of Bristol centre, so a plan would need to be put forward for those who can't walk the short distance

but I think that's a very good idea!
Just as in main other cities, FG could offer a combined Bus/Train ticket for central Bristol. In essence, bus routes 8/9 would be free!
Also, with the building of Cabot Circus, it is almost as close as the existing bus station. It also has better access by car!
The opportunity of integrating bus and rail on one site for Bristol has probably been lost. FG and Bristol City Council are too blinkered to value the benefits of integrating Rail and Bus services at Temple Meads.