Personally adding more damage to 2 gamemodes that dont really need more damage does not seem like an improvement, namely spvp and wvw.
when it comes to wvw, several professions are already capable of 1 bursting down any other profession regardless of defenses and hp pools.
Adding to that does sound better in my opinion.
On the sustain part in wvw, depending on the composition of the squad, the transfusion changes did something to prevent teleporting downed players to near perfect safety.
However it did not change the overal sustain of a chosen set of professions together, which is atm rather high. Playing against a squad outnumbering you is not really that fun.
The lack of boonstrips means every squad can be a walking boonball that is then unkillable.
As for spvp, that mostly from others what I heard, but its not much different it seems, but just with higher damage and sustain numbers.
As for PvE, doing mouth of modremoth 3 times in a short time and ignoring several of the mechanics of that fight due to shear damage done with maybe 1 squad worth of total players on the map seems a bit over the top. it does make a lot of the meta events easier tbf, but maybe a bit too much.