Digit, I understand your design dillemma. I myself am a game designer, without the priviledges you have to be in a company and actually have a chance of your ideas to be brought to fruition. My philosophy for the game industry is to make games that are morally and religiously neutral, that offend no one. And as a Christian company, a good portion of the money made from the game's sales (even subscriptions if you create a MMORPG) would be given back to the Kingdom of God.
In my opinion, video games can not be a medium for ministry. When they try to be, it doesn't work. I believe that is the job of music, movies, and literature. But, video games can be used to back other ministries financially, and to help change this industry by offering amazing gameplay, without all the negative influences, such as skimpy clothing designs for female characters, the glorification of drugs and alcohol, unwarranted violence (against innocents, but when it is needed, make it as realistic as it can be. Come on, David chopped off Goliath's head!), and occult references, etc.
That is when my design focus shifted to make games that are clean, yet action packed, and have the possibility of the largest market possible, without offending certain religions. Be a part of the transfer of wealth, from the wicked, to the righteous, by entertaining them without compromise.
Digit, I have a couple of very elaborate game designs, one is sci-fi, post-apocalyptic, and one is fantasy (kind of tolkienish, but no elves, orcs and dwarves). Perhaps there is some way I could work together with you and your studio.