No, but you can see this on Members by Week tab when you look at the campaign. Not super ideal.
Josh, thanks for the Members by Week idea. For the particular client that got me thinking about this, they have 221 active campaigns, some more than 5 years old. So an at-a-glance look at which of those have been associated with recent activity would be super helpful.
Well, in the realm of attempting to answer my own question out of necessity, I discovered that (with some manual intervention), one can get pretty close to the desired functionality by aligning two spreadsheets worth of exported info from Marketo:
1. A Campaign Activity report (which has a Last Activity field) run for all campaigns; then eliminating all but active trigged, active triggered archived, and campaign is requested
2. A Campaign Inspector report run for all active campaigns
With 221 campaigns, it was only 4 lines away from matching up perfectly.
Was useful for me. Hopefully it'll be useful to someone else...