I love iode’ and have used it now for 2 years on various Sony phones. Currently I have the newest supported Sony Xperia XZ3 phone running iode’ 3.3 and it’s awesome but from 2018. I’d like to request development on a newer Sony Xperia phone.
I would prefer to see development on older Sony (and other manufacturer models. For me the main purpose of custom ROMs is to prolong the useful life of phones that are no longer supported by the manufacturer. Junking phones which are still perfectly functional and replacing with the latest model is unsustainable and unjustifiable.
There are several devices supported by LOS 18 / Android 11 which would be excellent targets for iodéOS
On the other hand, as newer phones become older phones fairly quickly, and as many people may already own the more recent Sonys, and as Sony is so development-friendly, I vote for building for as many different Sonys as possible, provided the models chosen are recent enough to have VoLTE functionality, and provided the official and unofficial team(s) have the time and resources.