I totally called this like in 2010; It was just a matter of time before the community would crave control of both sides of the client server model, and the forces of destiny would intercede. However, I had no idea that when it actually manifested, it was going to be this well designed. I am thoroughly impressed, which not an easy task.
I'm so profoundly elated by this software. The only possible copyright issue remaining for 'Original' aka 'Custom' OT owners is the usage of the tibia spr. And I know a very good reason they(CipSoft) will never go there. So it's not their client software, not their service daemon software, and not their game content. A very happy position.
And now it is time for a pipe dream... Since I can't share the pipe, I'll share the dream: Perhaps the community should make their own protocol version or extensions. First feature should be supporting 32 floors instead of 16 so we can do things like
this(1). Next up would be to inflate the client view window by a square (17x13 from 15x11). Thirdly, use 24-bit for Life and Mana, and 16-bit for Soul. And lastly, of the ideas off the top of my head, restore the animated text that didn't suck (pre9.1)
#1: Worlds of Ultima: Savage Empire. Notice the waterfalls.