The ShopTalk sections should be structured the exact same way as the new General, GS/RS, ST, and RT primary boards. That makes the most sense, is the most intuitive, and would be consistent across the site.
The way ShopTalk is right now is confusing to new members and often frustrating to existing members. Some people don't seem to know where to post. If you have an RT you can post in either ShopTalk section which is perplexing and aggravating. The RT people need to bounce between both boards, and the GS/RS people need to read around the RT posts in the general ShopTalk board. Who knows what the upcoming ST people will do.
I agree with Randy, there are now three distinct models which have distinct technical differences. It's even more vital that the ShopTalk boards are separate as they deal with specific technical issues, adjustments, techniques, and repairs. The way it is now if someone new to Spyders, for example, owns an RS and they read about an adjustment or fix pertaining to an RT, without knowing it was for an RT only, they can mess up their ride.
I understand the problem with separating the general ShopTalk board that contains posts pertaining to all Spyders, but if it's not addressed at some point the problem will continue forever.
Use the same structure for ShopTalk as for the primary boards:
Spyder General ShopTalk: This would contain the current "ShopTalk" board for grandfathering purposes but would now be focused on shop topics covering all three models such as lubrication, tools, batteries, cleaning, etc.
GS/RS ShopTalk: Focused on the GS/RS.
ST ShopTalk: Focused on the ST.
RT ShopTalk: Focused on the RT and containing the current RT ShopTalk board.
This would follow the exact same structure as the primary boards and thus would be consistent across the site. It also allows for seamless future expansion if BRP releases a new model such as the Hybrid Spyder. This is the ideal time to restructure the ShopTalk sections because of the new ST model line and because the primary boards were just restructured. It all falls perfectly into place.