Bookmarking this if I ever start playing an Artificer. Our campaigns generally make crafting pretty difficult with little to no downtime, so I would have to rely on the Artificers other tricks to get the job done. A Warforged MeleeFicier is looking more attractive than before.
There is another Homonculus called the Clockroach, I believe in Monster Manuel IV. It specifically mentions that Artificers can make a Homonculus version out of and progress its HD. The most fun part is that it gains intelligence that way and thus can take feats, including breath weapon feats because it has one. Entangling Exhalation gives it a very strong supportive role while dealing some decent damage in the early levels. Also a semi at-will acid breath has its uses to destroy mundane items or melt locks.