yeah this is something that's curious to me as well, though i don't think they removed unblockables? the removal of chickenguarding feels like they couldn't find a good answer to the slower paced lockdown so non-teleport/crossup move chars could get mixups or offense going.
i know it's a legacy thing as well so i'm sure there's some factor of that to it but it's a real bizarre decision when it looks like a lot of the game is going to be projectile->tag trijump/command overhead/low shit which would easily get blown up by chickenguarding due to the delayed nature of the tag system style "assist" vs. the immediate factor of assists w/ point character spacing
also if anyone's goin' to EVO this year for marvel come see me in EX/project marvel/whatever when the tournament for it is bein' ran so i mess you up with orange hulk, the most toppest tier of characters that don't exist