Enrage timer's...
It all comes down to individuals even in best guilds. And each one count. If you have 200 ppl unwilling to use food and potion, bringing inadequate builds and equipment, and most importantly unwilling to cooperate it will probably end with teq hp at 99% with timer running out.
There has to be fail condition and in open world where ppl can simply wp and go back indefinetly, total wipe is impossible. What other fail condition you think could be used for open world boss like tequatl?
True there should be a losing condition, but that losing condition does not always have to be ONE timer.
Why not make various minor timed defend X or kill Y event’s during the fight like when we are put to protect the batteries.
Or even some event’s placed around the whole map that provides a buff during the world boss, but the buff can be lost or turned into a debuff if failed.