1. downloaded the freesource MechCommander2. Played through this week. Great game, lots of fun.
Lot's of good ideas that could be used for a scenarios.
I played through MechCommander last year and really liked it. No idea why I never played the sequal till now. Maybe I couldn't get it to run at the time?
2. got the MekTek Mechwarrior 4 but haven't started it yet. From the Youtube Let's play I found, looks like an excellent game. This one's next.
3. My X-Box died so I couldn't play through the games again but I watched some Youtube MechAssault and MechAssault2 vids and there are some good ideas for scenarios there too. You could probably make a pretty good scenario book out of this....