Necromancer and any other non-living strategies are going to be tough when your only buddy option is a Vampiress. I ran into that problem once and switched her out for another option.
I can't imagine running a Forcemaster with no walls, no Suppression Orb or Mordok's Obelisk (to punish swarms), no Battle Forge, no Thoughtspore, no Tanglevine, no Force Hold (although you do have the much pricier Force Crush), only one Teleport / no Force Push / no Repulse / no Force Wave / no Force Bash / no Mage Wand (to attempt to get more than one use out of your only Teleport), etc. If going that heavy/dependent on Enchantments, I'd at least have Enchanter's Wardstone to prevent a Wand of Dispel from wrecking your "one-trick pony Forcemaster."
OK, I'm being a little harsh, but I don't see the "flexibility" in this Forcemaster. It's all about having lots of enchantments and using Arcane Ward to keep you from losing stuff, and that's about it. Once you lose your Scimitar (and you will eventually; Arcane Ward doesn't stop Dissolve), you're going to find yourself in a world of trouble.