I think adding new respawns isn't the solution. Respawns are being added but depending on the level range you usually have just a few really good options. Older respawns are being abandoned as they often offer much less than new ones. For example, INQ and POI used to be popular hunting spots back in a day and now no one goes there for team hunts (unless they want bestiary).
I would like private respawns being added. Either copy paste of current locations or have some set location that you can have filled with monsters types from different locations (like a prison, feru seals, library, skeletons, falcons).
It would make the game much easier and more enjoyable for people who aren't in dominando and can play only a short amount of time so If the respawn is taken they can't just wait a few hours.
Given the fact that most of Tibia players are people over 22 with jobs, studies, kids it would be a change welcomed by many.
The private spots would allow party hunting so you could still enjoy the team play but you would get rid of a lot of negative things like long waitlists, dominando, KSing / luring, not respecting others.