Couldn't even afford 3 wave serpents for that. But I agree that would definitely make them more effective.
Since I don't have any models yet, I don't see a batrep happening.
Personally I would only use one troop with D-cannons, since the only thing at which they are better than scythes is killing vehicles and MC's and the distortion rule allready takes pretty good care of that. In contrast the scythes offers, more wouns, and overwatch.
I agree with this statement. But the D-Scythes also cost a lot. I was trying to get more models on the board
without taking guardians.