Will these 3 team getting back in the action and qualify to VCT master stage ?
Acend will likely not make it to franchising and depends how much they are willing to invest in in tier 2.
Gambit won't make it to franchising and we don't know if they are allowed to represent in tier 2 for quite some time.
Sentinels has decent chance at getting into franchising, so it just depends how good of their roster will be.
but all in all you will have different rosters on all of these teams compared to their Masters/Champions winner rosters.