wrt moving rubygem-mtrc I see what you mean; one of the examples in the repo is a classic URL benchmarking/metrics tool, but the library is a generic metrics & histogram tool. I checked when making the port, and most of the stats/histogrammy stuff already in ports are either in math/finance or are logfile related, in sysutils & devel. So this seems like a reasonable home; I can add benchmarks as a 2nd category. Sounds reasonable?
matrix builds look fine, will re-check after I extend the pkg-descr.