The only people who think this film is going to be anything even approaching "good", are the people who also (somehow) think that Batman v Superman is literally the best film of all time, and also have Batflek as their Twitter profile picture.
I really don't see how this film is going to be anything other than completely godawful - and this is coming from someone who watched the BvS Directors Cut, and actually thought it was worse than the original. To that end, I wouldn't be surprised if the theatrical release of the film actually turns out to be the best version of this shitty adventure.
That said, I'll probably watch it. I had a great time shitting all over BvS and the original release of Justice League, so im probably just going to get drunk, and sit through this utter shitshow with a massive grin on my face.
Though, it being 4 hours long will probably test my drunken patience. Oh man, that is so long.