There would be no need to break down or dismantle the regional structure, so all the regional comps and inters can remain much as they are.
Other governing bodies in other sports have regional structures too.
The difference would be direct membership between the shooter and the governing body, much as exists with NSRA, BASC etc.
I was asked by the BFTA management at the time, about ten years ago, to have a look at streamlining the organisation and re-doing the constitution, as part of a working party one or two steps removed from the mainstream management. Roger Moy might remember. That fell over due to reasons not worth repeating here, but that could be a way forward. Put together a team of volunteers rather than pick out one individual to come up with a strategy; there will always be the personal negatives if any proposal is too closely identified as "X's" plan.