Tinnitus wrote: ↑30 Nov 2023
None of your three suggestions.
I think those are actually likely - introduction of RRP in 11, then in 12 focus on new combinator, new 1st party REs and even improved browser indicate their strategy is to build a hub / ecosystem. RRP could become a more advanced Kontakt, although geared less towards samples/audio playback and more towards synthesis & FX. And that needs multitimbrality, a lighter RRP that doesn't drag full DAW behind it, probably MPE/MIDI2.0 support too eventually.
Tinnitus wrote: ↑30 Nov 2023
Vst within the rack would be amazing but pretty difficult to implement I imagine.
I doubt it's technically difficult. There's already many plugins on the market that can host other plugins, either to bridge them from obsolete / other formats to one that's supported; or to allow for building a creative FX chains in DAWs that don't do it natively.
I think absence of this feature was a business choice to prioritize native devices and REs, just like inability of VSTs to output MIDI in Reason gives unfair advantage to Players.