Armel would be a good potential pick up for Team Secret as I remember seeing his LFT tweet including the other players from Fnatic.
There's also OG announcing their role swap between Chuvash and Misha, so now Chuvash will be taking the support role together with Taiga while Misha moves to the coaching position.
If Armel is willing to relocate, then he's a possible pick for Team Secret. However, Secret will most probably prioritize players from EU already since those players are already used to the meta that Secret is using plus the communication barrier wouldn't be that much. In terms of raw skill and talent though, Armel is up there for the midlaners, and there was a time that he went toe-to-toe against the big names on midlane and still came out on top.
For OG, yeah, this is the best thing that they can do. Thankfully no one was really kicked out from the team. Chu has already showcased his support skills to the world on several tournaments, and he has performed according to what the rest of the squad wants. Misha's analysis and knowledge on drafts and metas can be used on the coaching position by providing great insights on the team pre-match. Hopefully with this switch they achieve great tournament placings and earn as much points as they can to qualify for TI invite.