I can't consider it closer to HW, it have way less effects that the old versions, it's literally just a generic buff damage and nothing more and the mechanic is broken to a point you don't care about it, you just focus on don't overcap MP and darkside come alone without have to worry about so you literally don't care about it, I see it as a lame version of SB that you activate and don't care about it that HW you plan other stuff around the buff uptime.

Indeed the blocking MP is no longer necesary but old darkside prevent you gain MP with natural tics and this one just let you gain MP for some reason.