To be perfectly blunt: no. You are not the first to ask, and I feel I should give an explanation as it must seem counterproductive to turn down willing contributors. There have been many client projects over the years, and if my only goal was to produce a working client I would have continued work on an existing project. Open Ragnarok comes to mind. Instead my primary aim has been recreating the game executable, as near as is possible from a binary. Given this particular constraint I believe there are few people who are capable of contributing, and many fewer still who would be interested in doing so. Lastly, I prefer doing my own thing, as I suspect most developers tend to do when it comes to their pet projects. Despite collaboration being pretty easy nowadays, I don't want to bother with it unless I can expect another major contributor.