I'll abstain as I feel that modules should be written so that multiple instances of them are not even required. Like Pro_News, where each Section is equivalent to a single instance of News, with each Section having its own independent set of Categories.
If you hunt back you'll find arguments in favour written by Kuragari (original author of Pro_News v1BETA).
This approach allows some configuration parameters to be shared and some separate, with the end user/admin involved in making that choice.
It also allows you to display articles frpm > 1 Section on a single page, which is hard to do from the multiple instances approach.