@MrT10001 I certainly don't mean to sound ungrateful to the porter and their efforts in this space, but I'm ultimately happy in an ironic way that an upgrade to focal wasn't available earlier. I'd already had to retire my OPO from daily use due to the 3G shutdown here, and I think I may just keep it on 16.04 now till the day it dies as a host for the various apps that are unlikely to be rebuilt for Focal and beyond. It's kind of a time machine for checking the Open Store.
And TBH, TuxRacer, TuxDungeon and TuxHunter have some real "waiting for the dentist with child" utility, and I think I'd be kicking myself if I'd unsuspectingly lost those to a distro version upgrade.