Honestly, I think the craziest nuttiest whackiest insane strategy for the Entity is the current one that Funcom intended.
Sure it's boring as all hell and super-stupid that only ranged classes can be useful. I kinda hoped that the very last boss in T4, the top top raid tier, would have been designed with a lot more cleverness and consideration to all the subscribers.
I tell ya, I feel resentment every single time I have to log off my barb onto a silly mage class, run through an empty instance for 5 minutes, stand on a platform and spellweave for 6 minutes as I roll my face on the keyboard, log back to my barb, run through the same empty instance for 5 minutes, kill a stupid loot box, score loot. Log off and go to sleep.
Now, THAT'S CRAZY!!!!
Crazy stupid.
PS, I would be completely excited if FC announced they were going to rework the entire Entity encounter. It would be celebrated, I believe, by the entire community if the re-work didn't require people to switch classes. FC, You really need to never ever make any more encounters that exclude ANY classes. Shame on you for doing it, more than once!