ooooo....exciting! In case you haven't noticed
, I really like the Dwarven Chronopia armies. Great to hear someone thinking of sculpting some because its hard finding minis from other manufacturers that look and feel like Chronopia dwarves. Thanks for considering this and soliciting our opinions!
Personally, my top choices would probably be Bloodbone Flayers and Warhammers. I've never really thought of or seen a good proxy solution for these. Most of the already-produced Bloodbones have a shield arm sculpted right to the body, or a gauntlet hand also part of the main body. Both would be hard to convert to a 2nd claw (in the case of the Flayers) or wielding a giant war hammer (in the case of the Warhammers). Plus, even if you wanted to proxy them, you'd have to proxy an entire warband. I think the Bloodbone axe leader comes with both arms detached, so that might be a possible start for a conversion, but you'd have to track down and purchase something like 15 of them in order to round out a full warband of flayers and warhammers.
Other than that I guess I'd be looking for individuals that were not sculpted. But for the most part, I've already proxied them (Impaler, Marksman), they are easily proxied, or there are minis out there that could be used in their place. For example, the Mauler has the same general conversion issues as the other Bloodbones, but since he's and individual, making one proxy isn't that big of a deal.