-test to which degree the sc2 wc3 hq models can be ported to wc3 and create one big download with the ported resources that users only have to put in their wc3 folder.
-help further developing JNGP
-help releasing Sharpcraft (the right new natives would be gold for wc3 modding)
-help releasing WarCom
-package everything together with JNGP to have all tools in one place.
-write good informative tutorials for those things and package them also with the tools, currently users have to dig for everything.
-research in one of the dozens of subcategories of wc3 where not everything is known. E.g. grab Whireshark, dig in the network code of wc3 and write a comprehensive guide about it and how camera, selection, commands etc are synchronized to the host. Or try to extend the fogstate bug, research its and other similar functions memory accessing patterns, maybe we can one day access hidden stuff we currently can't. I could give a lot more specific examples here. The return bug, ingame texture swapping and many more are all founded on small insignificant discoveries summing up to something bigger.
-one big comprehensive guide to known things in wc3 would help a lot. Every day there are questions and people answering do sometimes just guess or quote something false, a big verified guide would help there.
-lend your help to
http://tft.w3arena.net, as this seems to be the place where wc3 is played in the next years.
-travel to Blizzard HQ and stalk them to release a good 1.27 patch.