Blood magic and flasks

tl;dr: Blood magic takes away life flask, feels bad

Very simple topic really. I feel like blood magic now in a good place, even though we probably deserve a little life boost for taking it. But if you take it - your mana flask becomes useless, and it's not like you can replace it as it was in PoE1.
Maybe as additional benefit of Blood magic we should be getting not life boost, but abillity to put second life flask instead of mana flask? I feel like it should be realtively safe balance wise and it would make blood magic a bit more interesting for builds.

Any thoughs?