Using an ally as a hero?

By Commander Nivek, in Imperial Assault Campaign

I wanted to see if any one has used ally packs as a hero instead?

My sister and I were thinking of running a campaign and instead of an 4 heroes it’s two hero’s plus and ally. The ally would purchase applicable skirmish upgrades to use similar to the imperial agenda deck. The ally hero would add cards using experience gained equal to the cards cost and of course using applicable cards they could use in skirmish. I wanted to do this so the hero’s would be like team leaders a for a group of rangers, troopers or saboteurs.

Many thoughts on how to balance or price out 0 cost cards would be appreciated. Also how many points to start with to purchase an ally I was thinking 10 points per hero replaced.