I just like standard engine 4/6 90 tonners, and I want to be able to use a Ymir mini in the ilClan era. The Taurians were the last faction to have access to them, though that was a primitive tech version during the Jihad.
But the Taurians are catching up a bit with their mech tech, so here's an idea for a circa 3153 Taurian assault mech.
90 tons, 360 standard engine, standard gyro, standard cockpit.
Endo Steel, 12 double heat sinks, 14.5 tons of ferro fibrous armor.
LB-5X, two MML-7s, 3 tons of ammo, a Large X-Pulse Laser and Small X-Pulse Laser (to deal with infantry), CASE II (costs 1 ton).
It's nothing amazing, but it's pretty flexible. Which is what I figure a Periphery state needs from anything it builds. Reminds me of a bigger Marshal, honestly.