an option to keep in the theme would be model up a big block of handgunners with bayonets and treat them as spearmen. maybe make them look torn up like they've been in a fight and have spent all there ammo.
Master engineers are also a viable, and in theme element, and if your willing to go the Steampunk, say fantasy british empire, then you could get away with wizard modeled right.
note: if you see me giving tactical advice: just assume i have a internet tab open to 1d4 chan and I'm summarizing off of that.
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