Once you own this wondrous multi-tool, you'll marvel how you made do without it. Aside from helping level out the dynamics of (at times) questionably played parts, it serves as a gate with in an internal sidechain, and it can be used creatively with unexpected results by dialling in extreme values on the gain and compression dials. Also a great tool if you use plugins like Slate Trigger where you find that certain hits may fall below the triggering threshold.
Only shame is that there's not a better auto-detect for fills which often require a lot of careful automation plotting.