Well, having seen the reactions on Ubi's forums the month that SH5 launched, I figured that about two more years of waiting may be needed, while I would occupy myself with SH4.
A week ago, out of curiosity I clicked on the U-Boat missions in SH4, which then triggered the itch, reminding me to see what state SH5 was in. And so here I am today, downloading my way through most of Orpheus'
list of installed mods.