I want to create a Abjuration wizard (PHB, p. 115-116) that uses the Life Transference spell (XGtE, p. 160) and the Arcane Ward feature to heal people, but I've heard people saying Life Transference is bad due to how it interacts with resistance (half the damage taken = half the healing).
That is pretty relevant for me, because of the Spell Resistance feature that Abjuration wizards get at 14th level.
What if Life Transference worked like the Overchannel feature from the School of Evocation wizard (PHB, p. 118): necrotic damage that ignores resistance and immunity?
I believe that would be very thematically appropriate considering the fact that it is a self-sacrifice spell. I know that this is all up to the DM, but I want to know: Would that be unbalanced? Could that somehow be exploited?
EDIT: It has come to my attention that this particular combo (Arcane Ward + Life Transference) doesn't work due to Arcane Ward preventing damage (0 damage taken = 0 hit points healed), but my point still stands, as I still wish to use Life Transference with my Abjuration wizard and I still believe it is thematically appropriate for Life Transference to ignore resistances as it is a self sacrifice.