@AntiCatHi, I don't know if you are aware but Shin-Nil had already done some work on a port, maybe you can take a look at it as it may be of use to you:http://openxcom.org/forum/index.php?topic=37.30
As SupSuper has said, the "arcade-style keyboard" is already working for name entry on GCW-Zero, the critical part there is the battle scene poor performance and the need of a proper mouse emulation through analog stick.