Glaives do play a unique role. Though they will probably need help finding there place going forward.
The weapon is definitely for a defensive play style. Their shield ability is excellent for blocking damage while stunning unstoppable Champs and shrikers. While the melee atk, is great close quarters work on ads. The titan's edge of action bubble shield does add another layer of survivability, but it's seem more difficult to use that other alt fire weapon types.
The seasonal mods definitely do help the weapon type and losing them will hurt using them in a build. Unfortunately it may just be one of the many weapons that end up being relatively "unusable" because of seasonal champ mods.
English
-
Any weapon that has melee functionality is not a defensive weapon. I can understand shields but if one of the main points of a weapon is to get in the face of your target that is not defense oriented.