Depends on if u want constant damage output (eliz) on maps where her short range is no disatvantage, or want an burster who has no range disatvantage (bashira does signifcantly more dmg during her skill up then eliz just for the burst especialy against high armor targets). So if u ask me u will want both for sure. (not saying anything about thier AW Priority just about who to have in your team in general).