If I were king for a day...(these are just a few ideas off the top of my head)
If it were my sim I would be actively involved and would log in and play for myself to see how thing were working and to see if there were ways I could improve it based on what I saw taking place in the game. (this means I wouldn't have to take 3rd hand info to find out what was going on in the game)
I would listen suggestions and criticisms from players in the game and give their ideas a try to see if anything panned out. Maybe 30 days to evaluate. Say the playerbase wanted early late and midwar arenas. Since it shouldn't be too hard to configure I would set it up and let it run for 30 days to see if it was worth keeping.
I would offer a recruitment bonus like WoW for example when you bring a new player on or an old player back to subscribing you get a month free or something.
I would do like Walmart and have a greeter. When somebody new comes on for the first time, greet them and ask if they are new and would like assistance getting started. This could be a staff or volunteer potion.
I would have a feeder squad for new players that people were auto enrolled in as soon as they started. Other players who wanted to grow the game could volunteer for a position in this new squad and would get an achievement or something for contributing here.
Instead of having mods who appear to mute some people for saying something but not others, I would have people who would offer assistance in game to other players in real time. There are already tools like the ability to squelch somebody if you find yourself getting butthurt. I don't think the muting thing adds anything to the game and certainly takes away from it when it is not administered without bias.
I would have SOMETHING free to play in the main arena to get more numbers and to build perk points. The use of the free to play planes and vehicles would build up perk points but you couldn't cash them in until you bought a plane or a subscription.
In addition to the subscription model I would. Add some sort of upgrades for one time purchase. As a parent I may not be willing to pay $48 a month for my 3 kids to play a game such as this but I might be willing to spend $10 on each of them on their birthdays or at Christmas to buy them a plane (kinda like IL2).
I could go on and on. I think there are many good ideas about, however, I get the feeling that Dale would rather play poker and spend as little time as possible dealing with the thing in the "broom closet" Maybe Dale will write a multiplayer poker game?
