Cities and Local Government Devolution Bill [HL]

I know that we deal with situations where the best can happen in the best of all possible worlds, which is where we are on the Bill. However, could the noble Baroness confirm that in a whole range of functions being devolved to a combined local authority and the budgets to go with it, the prospects of those budgets being aggregated—with freedom for the combined authority to spend as it wishes, given those particular functions, and not have to follow the Bill above those amounts—would be perfectly possible, feasible and welcomed?