I just think having only mr bones as a general is kinda boring. How about a few more.
I have a few possible ideas.
Eclipsa:Queen of the Eclispors. Boost to generalised ,,monsters'' (Crawlers, eclipsors, etc) And boost to ranged units.
Irrakar: A bomber guy. Focus on close quaters expendible melle. Boost to fire units (Bombers)
Reckless and fast.
Al Chemio: A Bandaged (but not mummy. Just bandaged) necromancer looking guy. Boost to deads and their movement. Drown your adversaries in sheer numbers.

