I really do seem to have caught the 20mm plastic bug big time now.
I can think of so many Ancient armies that I want to do. I have one (the Assyrians) almost completed, a large Theban force in priming stage, a New Kingdom Egyptian army washed and sorted ready for priming, and am starting a line of purchases to make up an Ancient Indian army, complete with elephants and chariots. I bought the excellent Lucky Toys King Porus set, which has clearly been mastered and moulded for them by Caesar Miniatures. The rest of the force will be HaT figures. Granted the Lucky Toys figures don't really match the HaT ones, but as the King Porus set mostly just concentrates on the command figures, most of the poses in it will be useful. The Commander's elephant, the chariot, plus a few of the infantry figures, will all make great unit leaders, standard bearers and musicians.
The future might well see a Caesar Hittite force, plus a good sized HaT Parthian cavalry army (if I can get over my dislike of painting horses). Part of me feels seized by the desire to do a Strelets Anglo-Saxon force and a matching Norman one. It's perverse, but there it is..
I've also been looking through the Bolt Action rules. I think they will give a fun game with a few tweaks (and by ignoring the GW-inspired silliness of Commissars and Medics and other "characters"), and as I intend to stick to 20mm figures and models the cost will be kept very low, as the force sizes are quite small. I will use HaT AFVs and guns, and the 1/72 Valiant figures, as I have found a cheap source for the latter.
I'd still like to do a Steam-Punk force (or rather forces). But that will have to wait a year or so. I have enough to be going on with for now...