Many years ago when I managed my old job Discourse instance, people could only access it from Monday to Friday (and from 9-5), so we had to adjust the requirements accordingly because it would be almost impossible otherwise.
Finding the optimal threshold is quite tricky as soon as you leave the default, and every community have an ideal % of TL3 they will want, so this is great area for community managers to tinker.
On that note, I wonder if we could develop a better UI where you would tweak all those requirements in a single screen and see in realtime how many new TL3 you would have (or lose) 