I think that if SH5 Modding progresses at the pace it is now it'll be a while until we see a PTO Mod for SH5.
However, God willing we are able to import models (and spiff them up a bit) from Sh3/4 then I think that we will see a little faster progress on it. Also, I remember seeing LukeFF and the team that made RFB for Sh4 state that they were thinking of restarting RUB. If that project were to be finished I'm sure we could have a lot of the headway in coding the campaign scripts, etc done. This, I think would help alot in transferring SH5 to the Pacific.
One thing I would love to see would be the PTO from the Japanese point of view (seeing as this game focuses on the Axis submarines..) Or perhaps being able to make the British submariners part in the Atlantic War.
This is all possible of course, but only if we beat the Romanians to the punch!
Plus ours will be free
Cheers,
Krauter