No just all those things. But it means that it can't venture far away from a home base now.
If trying to capture a base you could defeat 3 mechs if you're lucky before becoming defenceless.
Yeah, the otherwise broken super mech has a downside now. It is still superb at defending a base. Stick the fafnir in the defensive position, murder everything. Repair, rearm, repeat.
Its gonna take a lot to displace a powerglove hellbent on defending a base. God help the attackers if a couple of friendly demos dig in as well.
If you want ammo sustainability on a close range fafnir, last I checked the RAC5 fafnir has an ungodly ammo reserve.