I have attached an interesting questionnaire on what players of the WinSPMBT/WinSPWW2 game seem to prefer when it comes to User Designed Campaigns over at the Shrapnel Games Forums. It is primarily directed at WinSPWW2 but some of the information should apply to WinSPMBT as well. You can download it here:

WinSPMBT/WinSPWW2 User Campaign Preferences

It covers some of the various parameters of a campaign that players seem to prefer to play. It should be helpful to anyone interested in User Campaign Design. You will find the preferred settings for each category highlighted with a Light Yellow bar as of the date this data was collected.

For those who want the latest data, the questionnaire can be accessed here: User Campaign Player Preferences