There is another thing to consider, in that spawn rates are so slow most of us buy a Mystic token to powerlevel taming through the boredom, since you run out of things to tame at many levels and there is nothing to do about it but wait or "cheat".
Not many are making an issue with the spawn rates, as we have accepted it as a status quo. But if spawning was faster many of us, myself included would do it manually.
Just today maybe 2 hours ago someone complained about taming sucking in General chat in game, and the first reply was to buy a Mystic token to get through it.