Cant warp to unganged players - doesnt work on them.
As for the Scythe - if its also sat with the sniper, then anything aiming to annoy/kill the sniper is purely going to hit that, as the scythe should be an after thought, you'd ideally want to take down the snipers if they were dropping your support from range. Also sitting at range is a good thing - if we had a bubbled gate, then even the other sides ranged stuff will be under the guns of our close range dps.