Admittedly, events are a fair point. I can compare Timeless Isle, but in all honesty, events like these are just more grinding masked as something different.

(Although Timeless Isle proved it can be done in such a way as to be interesting and innovative. Something I liked about GW2 was the platforming elements.)

Odin and Behemoth being uninteresting doesn't devalidate them existing, however. Your saying "they don't offer anything of value" is true of any world boss - they don't once you don't need anything from them anymore and are thus ignored.