Sadly, the TSLPatcher doesn't support that kind of functionality and I don't particularly feel like coding a custom installer right now. However, as to the expansions, Sleheyron will be a completely separate mod, Return to Dantooine is more of a concept and in my opinion should be a separate mod, Bastila on Korriban could be done via TSLPatcher, Sand People Messiah would probably make it's way in as a part of K1R, possibly even 1.2, the Czerka HQ and Tatooine Temple, while neat by themselves, will likely be utilized by the Sleheyron mod. And the Brotherhood of Shadow Compatibility will just be part of my BoS Multi-patch.