Proposed Mecha model: Icarus
Basic Idea: Biotic charge.
Primary focus: Mobility, Biotic Mechinery
Secondary focus: Shielding, Firepower
Non-focus: Armor.
A mobility focused Mecha, the Icarus is designed for a high mobility platform with a devastating loadout of short-medium ranged weapons, and powerful but low(ish) duration shields to permit it to quickly close with fortified enemy units/positions.
walks/runs to a place near where two sides are fighting, launches a super-sonic dash from 1-2 km away, producing a large shockwave on arrival, then lays into the stunned enemy forces with its short-range weapons. When shields start to get low, dash back out of the fight and back behind cover, recharge shields, repeat.