Here is my question, you say you have no interest in doing T5 and beyond, so why do you care about clearing it? There is nothing in the game other than second coil that requires T5 to be killed, and you don't plan on doing it, so why does it matter? How can you expect people to know what the DEV team is planning for the SECOND expansion, when we already barely know anything about the first?

Coil is geared towards the more hardcore type players, the ones who want a challenge. If you don't have the desire to try to learn the fight, then you don't deserve to beat it, plain and simple. Especially because it isn't roadblocking you from anything other than more coil, which would inevitably leave you in the same situation. If you really want a win that badly for whatever reason, i suggest you save up for a carry. The only thing i could see you wanting to clear it for are the cut-scenes, and there's youtube for that. (insert 'don't tell me to watch youtube' rant here) Plus, once you see the T5 cutscene, you're going to want to see 6-9, which getting a carry for those may end up a little pricey.