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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Personally, I'd like both a stasis and straight up kinetic. I'd love a glaive that takes the place of that kinetic slot either way. ....to that measure exotic heavy glaive that would allow you to flop elements? just another idea