I honestly think that obliterate cleaving is just not very fun, it would be better if remorseless winter was the ability that allowed you to cleave, but honestly, i just don’t think oblit should be doing aoe damage when we have frost scythe for it.
There are 2 things they can do:
Make scythe baseline and it costs 2 runes, and does double the damage.
Or the idea i prefer, frost scythe is a passive that procs on killing machine.