I guess our Aeromagnifier stash is going to start dropping unless you can complete Krayt.
Maybe. Maybe not. They said that they're trying to set things up so that the new raid system entirely replaces the old -- and they know they're getting rid of ChallengePit.
For that reason I suspect (but I can easily be wrong, I have no special knowledge of CG's plans), that the top-most level of HSTR replaces all rewards from not just HAAT and HPit, but also CPit.
We'll see, of course.
Also that thing about lowest-tier of a raid tuned to g10 sounds scary. How can they reasonably give out rewards in the Krayt raid that replace everything before but only requires g10 toons? That just sounds suspicious, like it would mess up the gear economy with noobs heading straight for g10 Jawas (who are all easy to farm and require no Kyros) and then using the Krayt rewards to take the Jawas to g12 easily and move up a tier, then take the Jawas to minimal relics (young accounts struggle with relic mats, but they could still do straight r3) and move up another tier and use that to bring up the Hutt Cartel (CPit does reward some Kyros after all) as they are farmed.
It's such an obvious upgrade path I don't know if CG will tolerate it.
Of course if they implement this system with more frequent raids, we could see a new raid every 6 months instead of every 2 years. It doesn't take that long in the new gear economy to get your Jawas to g10 but it's not nothing either, and if they're constantly rotating the raids and factions, things are going to get weird with newer accounts rushing to g10 an easily available team that is eligible for the new raid then trying to get the most out of them before the raid switches without investing too heavily b/c by the time you get 5xr6 the raid is replaced (if you're a young account playing with account resources enhanced by the new raid system but otherwise the same).