The only presence a player has in the game is thier mech, the game has to give players something, or you've removed the players ability to play the game.
Answer- But I'm L33t player and have lots of money and 100 extra mechs, and I always keep 10 mechs at my home base, so suck it new players.
Delaying, paying, or denying a replacement mech to players that have died is not the solution, you must give the player something to activate in.
The Arkhe zerg is only an issue if you are trying to 'camp' the enemy graveyard, um I mean station.
In our engagement with M2S, they backed off the station and I followed in my Arhke, they killed me roughly 1000m off the station, and there was no way I was going to zerg back to them from that distance.
Sitting on an enemy's station SHOULD be dangerous, and if you not at the station, but just roaming around an enemy's Island, you can't get zerged; blobbed in waves maybe.
For players that are new, and not in a corporation, the only mech they may have is the Arkhe. Nerf'ing the Arkhe may be make PVP for experienced players better, but it would make the recovery curve for new players so steep they would have the patience of a saint to continue playing.
Maybe the experienced PVP players can come up with an alternate stategy to counter the Arkhe in its current form instead of asking the dev's to fix it.