Post here and share with us your suggestions:
What would you like to see in a future upgrade?
What would be ideal for a sequel?
What doesn't work well (be nice about it)?
What would be an interesting add-on feature?
Graphical elements..?
NPC's for hire would be a good addition to the current game. Purchasing the hire of NPC's at different levels depending on how much they cost. A cheap NPC warrior maybe $5000 while a high level magic user costing 20,000.