Among other things it just makes sense as you can build into doing extra kinetic damage on chilled targets and the glaive does kinetic damage. Glaives aren't awful but being honest they aren't worthy of taking the place of most energy weapons.
I really want to run a glaive.......... But there are just so many better options for that slot.
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Ooooh how about a exotic stasis glaive now that’d be cool.