Test mod for Occultist support is up: Occultist support for Trozan's Skybreach (with test mod). Good news: warlock is pretty good; in fact I already like it better than Skybreach Druid.
(I posted it as a linked thread, but for some reason it doesn’t appear here.)
I don’t think that’s a good idea: Skybreach is the one TSS set that already works in terms of both gameplay and overall strength; redesigning it would be deleterious.
Spammable TSS makes sense for Iskandra because its single-skill support is currently rather awkward, but I wouldn’t want it in other sets.