My friend and colleague Brian Loesgen has posted some links to some great tools for BTS.
The Biztalk Best Practices Analyzer is kind of like an FX Cop for BTS, but provides actionable recommendations of things you should do right now. As Brian mentions, version 1.0 of the tool had 10 rules, and 1.1 has 220 rules. Anyone using BTS or planing to deploy it should *run this tool*: details.aspx-FamilyId=DDA047E3-408E-48BA-83F9-F397226CD6D4&displaylang=en
The BizTalk Operations Guide is another great resource that will help you tweak and tune BTS so that it runs as a well-oiled machine:http://download.microsoft.com/download/a/a/d/aad035e6-e03b-4bea-ad9a-fa1ff8d10ca0/BTS06R2_OpReadiness.pdf
On that note, anyone doing BizTalk work of any kind should make Brian's blog part of your daily bread. Check it out (and subscribe) here: http://geekswithblogs.net/bloesgen