The war game is too expensive for 99% percent of players to START.
Mobile units are a decent idea. However, most people don't want to pay 15 gold coins for 5 mobile interceptor wings (which is about the price for the professional soldiers). There are about 5 people who will pay this cost. This further separates the average player from the asset-loaded, gold-coin loaded player.
All the increasing war game costs (and decreasing profits in general) have done is discourage people from playing. It's evident that premium members are becoming much more scarce than in years past. I don't see this changing unless general costs are lower. Not everyone wants to spend 100s of dollars on this game, and in order to be competitive, that's what it looks like it will take. It doesn't seem like a great business model.
Now, unless you pay for cash (which is obscenely priced and absolutely not worth it) or spend hours a day raiding c3s, there is not enough money to actually "play" around at all. The new players in chat are all teetering on the brink of bankruptcy. At best, they'll make 10b per game month. Awesome, now they can build 8 miles of road.