We are adding new mechanics and accessories to add more variety to the game and give some squashy champions more survivability against faster nukers.
Additionally, I just want to point out that the Reaction Accessories are working only before the champion's first turn.
What you're doing is changing the meta and punishing people who built properly for 2+ years.
Once the buffs from tanky champs start rolling in it will be extremely difficult to deal with them and champions like Serris will become 100% mandatory.
Dutchess and Krisk are gonna be an even bigger issue than they are right now.
Squishy champs pay off by having strong nuking capabilities. Their weakness is getting nuked themselves.
The meta is gonna change where building speed is gonna be a disadvantage. 75% crit resistance is absurdly high. Fights will be prolonged often leaving you frustrated with RNG and terrible mechanics.
I would rather lose to Trunda in 10 secs than Dutchess in 4 minutes.