It has been a while...
Despite my affinity for 28mm, I am reconsidering 15mm mostly due to cost and space. Money is tight at the moment as is space for games. Also, 15mm looks better in a mass-battle aspect; 28mm nails it for skirmishes.
Along with this, the rest of the project is up for reconsideration also. Greeks/Persians are still a possibility, but I am also thinking about Successors, Romans/Gauls/Pontics, Late Romans, and 13th century medieval. Rules are another aspect up in the air; there are many possibilities and I can not rule out the chance that I will want to paint up some fantasy armies as well!
So, hopefully much to blog about.