Well, the reactive armor does limit one somewhat due to the hefty amount of slots, but here's a simple design that kind of meets all requirements to some extent:
SturmJaeger Medium BattleArmor
Mass: 1000 kg
Chassis: 175 kg
Motive Systems:
-Enhanced Ground Movement: 80 kg (3 Ground MP)
-Jump Jets: 150 kg (3 Jump MP)
Armor: 6 pts Reactive: 360 kg, 7 slots
Manipulators: Heavy Vibro-BattleClaw: 60 kg, LA
Weapons:
Light Recoilless Rifle: RA, 175 kg, 2 slots
Another option would be the following:
FlammeJaeger Medium Battle Armor
Mass: 1000 kg
Chassis: 175 kg
Motive Systems:
-Enhanced Ground Movement: 80 kg (3 Ground MP)
-Jump Jets: 150 kg (3 Jump MP)
Armor: 6 pts Reactive: 360 kg, 7 slots
Manipulators: BattleClaws (1 per arm): 30 kg
Weapons:
Flamer: RA, 150 kg, 1 slot
Firedrake Needler: LA, 50 kg, 1 slot
AP Weapon Mount: LA, 5 kg, 1 slot
Or for something that's more anti-infantry than the rest
Panzer Grenadier Medium Battle Armor
Mass: 1000 kg
Chassis: 175 kg
Motive Systems:
-Enhanced Ground Movement: 80 kg (3 Ground MP)
-Jump Jets: 150 kg (3 Jump MP)
Armor: 6 pts Reactive: 360 kg, 7 slots
Manipulators: Basic Manipulators (1 per arm): 0 kg
Weapons:
Grenade Launcher: RA, 100 kg, 1 slot
Grenade Launcher: LA, 100 kg, 1 slot
Light TAG: Torso, 35 kg, 1 slot
Or for maximum mobility (but not much against hardened targets on its own):
Shredder Medium Battle Armor
Mass: 1000 kg
Chassis: 175 kg
Motive Systems:
-Enhanced Ground Movement: 80 kg (4 Ground MP; see below)
-Jump Jets: 150 kg (3/1 Jump MP, see below)
Armor: 6 pts Reactive: 360 kg, 7 slots
Manipulators: Basic Manipulators (1 per arm): 0 kg
Weapons:
Firedrake Needler: RA, 50 kg, 1 slot
Firedrake Needler: LA, 50 kg, 1 slot
Light TAG: Torso, 35 kg, 1 slot
Mechanical Jump Booster: 100 kg
I still prefer either some form of Stealth plating or Advanced plating though...
Ruger