I think the brands should be that of the factory and franchised, that is the whole point. The franchises offered as contractual rights to sales within defined areas.
One big entity for the nation and then smaller entities for each region, then as inventory is imported it gets distributed and to each region, if a sale is made online through a single factory brand portal, that sale goes to the assigned franchise all based on zip/postal codes.

The factory branded web portals would have to be professionally designed and linked to databases, those databases propagated (data entered) at the factories. Those same web portals can be reused and modified for different nations distributors, however the factory brand retained

In that is there a need for SSR and BMS? Yes they become a large national distributor for a variety of manufactures, which is what they already are, but in this proposal they become much more efficient and linked into an aggregated (combined) global contractual network.

If a local dealer wants to have a website they can and can advertise what they sell, but they cannot sell to those in another franchised sales region online. Each dealer should have assigned geographic territory.

For example all the Bashan dirt bikes sold through a single web portal, when the customer enters their zip code then that sale goes to the contracted dealer that has the zip code. The inventory comes out of the closest location to them.

Then factories as the actual manufacturers can develop identities; they can be easily identified in the market. Then the factory and its partners can also see what sells best and were.