Great Guide Erk,
noticed one point, i didn't see in the comments here:
You say concentrate on the CT to kill the enemy Mech fast. Maybe it's random, but i notived that CT killed Mechs in the Campaign only give 1 of 3 Mech.. uh.. Salvageparts.
(Which is logical, bacuse almost all Mechs carry their Fusionreactor in the Centertorso of the Chassis. Direct Hit to it and there isn't much left to salvage except for Limbs.)
So if you want to get your Hands on a specific Mech fast, you should focus on grilling its Legs, injuring the Pilot as much as possivle.
Flamers work pretty good for that, as long as the enemy Mech isn't carrying Ammunition.
Dunno if that's worth adding to the Guide though =)