[quote=Aristo]
Hmm, if I use Centaurs like cavalry, would they use the +2 points for being heavy cavalry, or would it be considered a natural upgrade, since they're part horse themselves? Would you buy them as cavalry at all, or regard them as infantry for the purposes of army list building?Additionally, what if we want a unit to be proficient in both melee and ranged combat? As both don't cost any additional points individually.
[/quote]

I can answer the first part to some degree since I asked Kadaeux myself regarding my driders.

Centaurs, Driders, etc count as cavalry without the extra cost required for them. So if you have say a Centaur Infantry regiment then they are technically cavalry.

And if you make them ranged then they count the same as horse archers as it were.

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For the second part I think you can't either a regiment is ranged or melee, no middle ground. But Kad can answer that better.