Ryan, the multichannel drum editing thing is sort of cool but creating that multichannel drum track in the first place is a bitch, as well as not having any control over the relative mix of each piece of the kit within the file until you explode it out onto separate tracks. It is definitely very convenient to do all the edits to one multichannel track, but it's a workaround. All Reaper needs is track based edit groups, then you could edit all the drums at once on their own tracks, just like ProTools. As it stands, you can item group the whole drum performance which works too, but if you are doing multiple punches and takes you have to marquee select and regroup every new take all day long, not very efficient at all.
All Reaper needs for this is a sort of visible "folder master track", so you can make edits to the folder track itself and they are applied to every track within the folder. Everyone has a drum folder anyways right? Set it up so you can right click on the folder track and enable which track is being shown on that track to edit based on, so like you right click your drum bus and set Edit View to Snare, then the folder track only shows your snare so you can do your cuts based on that and have it applied to your whole drum folder. Or set it to kick after that to do your kick edits, while still applying it to the whole folder. With the new nested folder system in 3.0, this would also allow you to make an edit to your Toms group independent of the drum group. You could also use this and hide all your mic'd guitar tracks in the guitar folder, only doing edits to the DIs that are easy to see, knowing that all the mic'd tracks are being edited automatically in unison. Would clean up the arrangement window SO MUCH to be able to only show the easiest to read track for each instrument, while doing all your levels of the hidden tracks in the mixer window.
Ugh I wish they would implement these basic fucking important features instead of fucking with "Project in a Project!" and other non-essential stuff that should not be a priority...