Slighty off topic but related.
You know what i wonder?
What were the sales figures for UBM, and of that number, how many of those sales were made due to mods supporting only SH4 version 1.5. I know i've seen more then a couple of posts by people buying UBM who had no interest in uboats, but got the expansion anyway only so the could run the latest supermod. If the number is high enough, i think the SH4 modders deserve a free game as a pat on the back for supporting the series and generating sales.

(yeah i know, self serving wishful thinking.

)