Cool, I'm glad to see others developing RTS for offseasons too. If you want to use the software we used for Mission Mayhem (it was designed to use keypresses as inputs... originally we planned to use the I-Pac Keyboard Encoder, but unfortunatly didn't know for sure we were doing it till too late to have shipped) However, the software is free for your use if you'd like, just PM me... I've got to put like a half hour into it to fix 2 minor bugs we found in the weekend and it's all yours if you'd like, the screenshots are on CD-Media from last week.
I don't think you can really do an offseason well this year without some form of RTS, the way those balls are flying there's no way to visually see the score like previous years. I'm curious to see what people that spend more than a few hours designing it come up with
Best of luck with it, can't wait to see your final product!