Trying to improve my MA Abyssia Pretender Design

[thejeff]

But Prison of Fire is still precision based, isn't it. So it suffers the same problem.

Drakes & Elementals always seem to gem expensive for what you get. And it's not like you've got easy access to Dragon Master.

I'd be tempted to turtle and push blood. You're relying on cap-only b2-3 hunters so the SDR nerf in CBM 1.7 doesn't hurt you much.
Go for Const-6 for Lanterns, then you can research what you need quickly.
I'd still say evocation is your best option for early mid game wars. Try to get to the AoE spells. You can minimize the precision problems with battlefield placement. Your troops are tough and slow so it's not hard to wind up with mages just behind the battle lines. It's hard even for them to miss completely at short range. Ignoring friendly fire is a huge advantage.