For those interested in U-boats and the Battle of the Atlantic... I think that Sh3 will be the place to be for several years to come.
There may be another U-boat sim in production somewhere right now... but it will have a MILLION miles to go to address things as comprehensively as SH3 plus the big mods... even if a hypothetical U-boat sim is under construction now and assuming it has one or two superior elements.
That being said... I look forward to SH4 as a distraction from all the work we've done modding SH3... but only as a "break" from SH3. In some ways, I'm still "just discovering" SH3. It will be my turn to enjoy SH3 soon enough.
Even though testing new stuff is always cool... it is no substitute for simply playing the game.
We have some final targets to hit with GWX before it is playtime.
Gatos are cool...
U-boats are cooler IMHO.