I may give it a shot. What I can say now though is that if I write any large-scaled plugins soon I'll do what most other devs are doing and just make it Bukkit-independent so you can easily use both.
Just uploaded a video showing some cool modifications I made to mobs. Even though they're buggy, what do you guys think? In the video the skeleton has a gun while (even though I was lagging a bit) the zombie runs around and attacks you while doing so.
Just a quick video testing (very buggy) custom mobs such as one with super fast running or even a gun... Website: http://www.horusdev.com Song: SCRVP Magic Vs. Zedd - Rude (SCRVP Remix)
I can send you a new link with the instructions included with it. Make sure you actually read it since I highly doubt the plugin is broken and it's more of a user error.