Thanks for all your work here so far! I loved playing G&W in Melee and he ***** in Brawl.
I have yet to see anyone else play as him but me in my experiences with several groups of friends, for those worrying that he'll be overplayed. I have seen an overabundance of Pit players, who's camping can easily be countered by G&W, so it's great to have him as a main.
There are a few things you may want to mention in your guide. A little "pros and cons" section would be useful for those unaccustomed to him. Example pros include a surprisingly fast ground speed, his long range-long lasting attacks-high priority attack, excellent verticle recovery, and ability to attack after his Up B.
Cons could include his still light body weight (I believe he's tied with Jigglypuff for second lightest, is this right?) , his fairly predictable recovery (though the new Up B mechanics have vastly improved on it), and his lag for particular moves (such as his forward air).
I dunno, do whatever works I suppose. Another thing people overlook is his unreasonably low duck. He can avoid a number of attacks this way.