Most mechs in MA have abilities that don't stack with a pilot. All % ability mechs stack with pilots.

Now go look at the % mechs. out of all of them Stalkers ability stacks with both damage and HP... I played VS a maxed Stalker with disc 12s and again with one that had ARC 12s. both healed faster then I could deal damage.

SO lets do some math👻    A maxed stalker has 113900 HP deals 50%(80% with implant) + damage and heals 10%(20% with implant) of max HP if it kills a mech in its ability. 

maxed pilot 40%+ HP   70%(100% with implant)+ damage. 

without implant buffs 100% base + 70% + 50% = 255% with max disc 12  from 24012 to 85242 with 2.  170485

with implant buffs  100% base + 100% + 80% = 360%    with max disc 12 from 24012 to 110455 with 2.  220910

HP 113900 + 40% = 159460.  15946 HP on kill or 31892 with implant. 

so if they use both buff and weapon damage implants a Stalker can deal 220910 and heal 31892 HP on kill with drive going. it kind of loops... it deals more... it heals more... 

To fix this BS were Stalkers just gets more from a pilot then other mechs, make all mechs have a % based on HP in their ability. Damage abilites and shield abliltes should be based on max HP%.  Add HP% extra duration or CD for the stun, crash and ablility drop mechs...