Apart of the Any::Moose indicator: last upstream commit was 6 years ago, tiny popcon, leaf package, only 3 reverse dependencies on CPAN (of which 2 have not been updated since 2014), and finally the Mouse ecosystem is essentially on life-support as the community has been adopting alternate OO frameworks
⇒ I propose we remove this package. I'll file the RM bug at some point after 2020-07-19, unless someone objects. (And in passing, I noticed that many other libmouse*-perl are in similar situations, regardless of Any::Moose, so there's a good chance you hear from me about them one of these days.)
