Good mech, the ATM give some flexibility, the MPL are really usefull vs BA, proto or other fast bug.
For the improvement, the iATM could be a prime choice if you downgrade the launcher (for cost control >:D)
3x iATM-3 + 3 tons ammo (Harassing, crit seeking, special ammo)
10.5 tons standard armor (+2 R/L torso, +1 CT).
ECM
Light Active Prob (for some recon capacity)
4 MPL
2 MiPL (anti-infantry)
Cost (original cost) : 5.536.807 CB (5.536.807)
BV : 1992 (2081)
If use an iATM9+3tons just remove 1 MiPL but the mech is a sightly more expensive (+5 BV, +150K BC) than the base version
