I got several bugs whilst playing, and one of them seems so bad that I can't think how no one has reported it, it has to just be the server; a privately hosted one. When you drank a bucket of water 35 buckets of water would spawn in your inventory every time, causing you to drop most of them.
When upgrading my crafting skill it only takes 1 skill point to upgrade from 4-6 (skips 5)
Also I was unable to obtain meat from hunting, yet the player who was hosting was able to get meat fine.
Really other than that and the obvious increasing lag there was no problem. The game concept, design and current state is very fun. We even had some aerial combat just for fun!
Thanks for the great mod, looking forward to future releases