Thanks guys. I have this Spanish Fury! project that never takes of because of the figures (not keen on 15mm and not much to choose from in 28mm ). I really want to build those massive formations depicted in engravings and paintings so 20mm sounded a good choice because of plastic (shudder

). Besides, most of my gaming partners are 1/72 and 20mm gamers and I can use some of the scenic and buildings.
I think I'll have to make conversions out of TYW/ECW minis and cast them. Quite surprisingly I like the Irregular minis and they will come handy for Eastern Armies (more focused in Sweden vs Poland). Some early Renaissance can also be "updated" for the later period (French Gendarmes in unbarded horses, etc).
Food for thought...