I was looking around and I remembered that the Manreaper existed. That said I think it would be fun to have power scythes in the game. They could use the animations for power axes and be shorter, one-handed weapons until proper two-handed animations can be done for two-handed weapons like thunder hammers.
I assumed they would fill the same tier as power axes and mauls. Maybe being more damaging than axes but more likely to lose with repeated clashing. Almost like an opposite to the maul.
We're more likely to get Power Lances if/when they ever add bikes. Then again, Scythes might make a good alt weapon for CSM
CSM don't get Power Lances, but Scythes would theoretically make a good "rider of death" image if bE wanted to go that way and make some mechanical symmetry for both Marine factions
Making Scythes one-handed would be kinda weird....the thing has got to be 2-handed. For the purposes of assymetry, it would be cool if SM got their Hammer and CSM got the Scythe. As for the one-handed version, ideally i see it as an alternative skin for a power sword. It would be cool if some alternative weapon skins looked like actually different weapons of a similar class. Regarding the lances...cmon, be real you guys, we aint gettin no bikes anytime soon. If ever.