I managed to get this GUI working with very little fuss. The wide map looks great!
However... I noticed that this GUI uses ericlea's corrected RAOBF speed indicator on the periscopes. (it's a fix for the incorrectly positioned speed marker in Ahnenerbe WideGui Final).
The fix works, but sort of detracts a bit from the original appearance. So I recently made a version that looks more in style with the original instrument.
Here's ericlea's version:
And this is my improved version (now being used by ericlea himself):
Here's how it looks in-game (Ahnenerbe version shown here):
Until such time as Brodaga222 includes it in his next update, a JSGME-ready patch for it can be
downloaded here.
Despite being named as a fix for Ahnenerbe, it's a direct drop-in replacement for the ARB WideGui as well.