I appreciate your opinions. I'm not into a whole thing, so I'll just respond to a few bits.
I wasn't aware that we have transcripts of the script? So how do you know what is Whedon and what is Terrio? I don't really care that we can "just tell" - it isn't confirmed. And in that trailer, there was literally one line that I can imagine you're on about. "That's not the saying. That's the opposite of what the saying is." I'll concede it sounds a little light hearted. Oh wait...that's the tone we were headed towards anyway. etc.
If you're talking about Cyborgs design? Fair play, your opinion. I personally like the alien metal/angular design. The CGI looks absolutely fine. I won't claim it's utterly outstanding, but it looks damn good for what they are pulling off. The CGI overall in this film looks phenomenal - if you understand just how much CGI is in these big blockbuster films, I don't think it's a valid complaint. And if you also think Thor, Infinity War, X-Men, Kingsman etc are all fine but this specific film isn't? (Not saying you do, merely an example at large) then I have nothing to say to that, because none of these films have perfect CGI. Not even close.
Again, Flash is a young version of BA. We only get one film Flash, so they've incorporated bits of Wally too. You're reacting to the actor's natural delivery it seems?- personal preference. The design of the Flash suit is functional - the wires are there to ground the energy he creates. He builds the suit himself. It all ties into the character - smart, self driven, but young, and impressionable. Honestly can't see whats wrong with that.
Won't go into "gloomy" Superman. You've demonstrated solid understanding of the story, so if that's how you interpret a guy who is trying to do the right thing as he faces some difficulties, then fair enough. IMO - he's one of the most genuine, deep feeling, introverted but honourable Supermen we've ever had.
Slap dash crap-tastic? Yeah - pretty certain the hundreds of people working on this film just thought "you know what...I'll just phone it in". Well thought out criticism with validity is fine of course, I'd never argue against hearing that, but I think that's just a bit ****ty to say about hundreds of people's collaborative efforts to create something together, while we sit on message boards tearing it down with our "superior" knowledge and understanding. Again - not really a dig at you specifically, but it irks me.