Thanks for the feedback! And my apologies for not replying to your earlier post, but we have some issue with our forum where email notifications are not sent for new posts
You're quite correct with your analysis of the Datastore monitor - and the KB article does list the thresholds of 200MB and 100MB, as those are the best practice thresholds from VMware beyond which you can have serious issues (datastore and VM corruption etc)
In order to avoid the chance of such corruption, the out-of-box thresholds in the nworks MP are a little higher, as you saw - 512MB and 256MB - to give you some time to take action.
The Best Practice guide does make various overrides and customisations, and they may not fit for every customer - in fact, I plan to rename this guide into an 'Advanced Configuration' guide, since that is a more accurate portrayal of what it provides. The advice in the guide of how to create groups (e.g. for Datastores) is very useful, as many of our customers want to run different thresholds against different storage tiers.
Would be great to get your feedback on other aspects of the MP, and your experiences of deploying it. Please post more here, or feel free to email me direct - alec dot king at veeam dot com.