Latest changes on protections and crowd control effects are benefficial for a lot of classes -specially succession berserker- and brought a lot more of protection into the game with classes having more Super Armor moves.
The changes for Corsair are a nerf, since a really useful float effect got removed from Mareca: Sea Stroll and in exchange Overflow is getting Super Armor only for half the skill. Overflow is a slow stationary skill, with little area, and not even having Super Armor for the whole duration of the skill. 

Having Frontal Guard on Close Quarters: Charge is not useful, because movement skills with Frontal Guard are too unreliable and risky to use in the state of the game.

So corsair got:

- Gained Frontal Guard on a movement skill, which is unreliable (Close Quarters: Charge).

The suggestion from Corsair players on BDO Corsair Discord:

- Revert the changes on Mareca: Sea Stroll.

- If you go on with the changes on Mareca: Sea Stroll: Give Super Armor to Close Quarters Charge, or give Frontal Guard for the whole animation to Entangling Vortex.

- Make Pirate's Life For Me be fully Super Armor again like it was in the past.