If you have a look at the code, you'll see I've created many Makefile's, one for each supported platform. Things only get worse as now most platforms support two different/incompatible SDL versions.
I shall fix that* by dumping that system and creating a build system, probably based on CMake.
Also, a week ago or so, the nice guys from DevkitPro (the SDK I use to build BennuGD on the Wii) have released libogc 1.8.6. In their release notes, they say they've fixed something related to wrong readings in Balance Boards. Bennu was getting wrong readings from Balance Boards, so hopefully when I recompile BennuGD for the Wii with the new libogc, you'll be able to use the Balance Board correctly :)
Also, just a couple minutes ago I found out about a very cool game called "Firewhip". Have a look at the video, as it is a realy cool one: