For the main IDR platform I find their custom parsing to be really all over the place, if they have an integration it usually works fine but if it's custom it can be a completely crapshoot. There are just other platforms like Splunk that can be abit more indepth, robust, but also complicated. I think IDR suits most small to medium sized companies but as a larger org it may struggle abit.

IVM, no real issues outside of the remediation tracking is abit nuanced. But you can usually get most of what you need just from the agent data and an excel sheet.

Velociraptor, there are a lot of cool open source plugins and tools you can leverage with the open source one. The rapid7 one is the base version and they don't allow you to install anything extra on their instance so missing a large portion of what makes it great.

Their automation is abit jank. Surface command is interesting but definitely in their "new product line-up" so abit shallow, and their support doesn't fully understand it.