Agree.
I think they made a tactical error separating Widow and Winter Soldier. And I agree that as a supporting character perhaps with his own arc in Cap he’d be better received. Other than his original solo title working with Natasha, Stilwell, SHIELD and Fury, its been hit or miss. Very inconsistent and generally without a cohesive theme. Personally for me, they veered away too quickly from his Soviet redemption arc. Lot of uncovered ground in that gulag.