whoa! seems a lot of people wanted to respond faster than me
yes it's worth finishing, looks real good so far besides, the spysat mod feels a lot like cheating
whereas this project is :
a : community based, so all the info is gathered by your co-kaleuns, gives it a genuine feeling. as well as being something that can help in maintaining said community
b: always incomplete, so no stuff like spysat where you can flawlessly home in on a particular convoy. gives a more intel/info received feeling
c: interactive, makes you feel like you're contributing to the war effort apart from sinking all those ships, good for immersion
d: gives you a reason to visit other places than the general convoy/shipping lanes to see what might be going on...always nice to detour a bit
on a side note, the GWX team seems to have noticed our little effort and it seems that they may have something to say about "tanker alley" especially, so it'd be wise to consider some of the data outdated when GWX 1.04 is released