Everything I have read or heard directly from Ben and DI and others from L6 is that if they Model Amp X or EFX Y .. and they think its their "best" .... its going into the Full Helix, LT, XL and Stomp ...... and Native.
I don't think the people at L6 have any desire to make people pay for their "best models" or "unique extra models" ... ... you buy a Helix variant and you get all of their-best .. for free ... if they get their hands on Jesus's Serial 0001 Dumble and model it, you're going to get it for free.
In terms of plugin suites, Native gives you a virtual full Helix with all the exact same algorithms and quality ... and for big chunks of the year they run big specials on it to ..... everything in Metallurgy etc.... is already in Native.
Ben