I haven't watched Titans yet (I will get a free trial once it's all aired), so I can't comment on that. I do see a lot of people who are upset that it's not more like the cartoon. I'm not sure what to say to those people. Anyway, the series looks like it could be good, so I'm looking forward to seeing it.
As for the money issue in the Arrowverse... I think it's a problem. Not the money itself, because a lot of shows don't discuss how their "poor" characters still seem to wear new clothes every week, and eat out as though it's free. If that were the issue, I wouldn't really think it was that big of a problem. The thing is, they've made money a plot point on both shows, and then dropped it because it was boring or something. It might have been interesting to see Oliver live amongst the poor people for a while, but they just kept giving him massive penthouses. It might be interesting to see the Flash world expand a little bit with characters earning a living in different ways (Cisco would never need to get a real job. He could design tech and sell it for millions).
The issue is about how invested the writers are in their own stories. I've probably said it before in some thread, but writing fiction is about earning the trust of the audience. You make a deal with them, wherein they agree to buy into the false reality that you establish, with the understanding that there are still rules and there are still consequences. If you violate the trust of the audience by not buying into the reality of your own story, or by shattering that reality that you've created, it is incredibly hard to recover. If you don't buy into your story, why should anyone else?
That's a major issue with the Arrowverse right now. Introducing metahumans was a huge ask, after establishing the Arrowverse as a grounded "reality". But we went along with it. It was all good. But more and more often, the writers are violating the "reality" of their fictional universe, either because they don't care, or because they want to promote whatever cause they're pushing that week, and that makes it harder for the audience (or at least for me) to remain in that story. I don't buy Felicity holding her own in a fight with Diaz, because they've established that Felicity can't fight worth a damn. And the writers didn't buy that scene either, so they didn't pay it off. They didn't want to invest in paying off the money issues that they established. They didn't want to pay off Oliver falling off of a cliff after being stabbed through the chest with a sword.
I honestly don't think the writers have an interest in writing a Green Arrow series. And what's worrisome was that this started to happen on The Flash last year too. When the writers, for some unknown reason, decided to ignore the fact that Marlize was a villain who was equally responsible for numerous murders and for sending Barry to prison, and they started writing her as an ally of some sort... it violated the story quite a bit. And when the Wells alternates all became excuses for the actor and wardrobe people to show off their movie character impersonations, it was clear that the writers didn't even take their own show seriously.
The Flash can recover. It was never a show that was meant to be taken super seriously, but the writers still have to take it seriously. A weak season, or maybe even two, can be forgiven. But with Arrow... I just don't know. I find my patience to be very thin with that show. I want them to address the issues and fix them, but they don't seem to be doing that. They keep doubling down on some of them. So when they introduce this flash-forward thing, I'm not intrigued and I'm not on the edge of my seat. I'm rolling my eyes and wondering why they bothered to bring Roy back at all, after giving him and Thea a happy ending.
When I see Diggle fighting Diaz, I find myself wondering why he is having such a hard time. If Felicity can hold her own against him, surely a well trained, muscular dude can kick his ass pretty easily.
It's funny. I was watching Daredevil, and without giving too much away, there was a fight scene that took place in a weight room. One character picks up what must have been a 35 or 45 pound weight and almost uses it to bash someone's head in... but stops, because it would obviously kill the guy in a horrible and bloody way.
Whereas on Arrow, Oliver beat the crap out of someone with a very similar weight, and it was nothing.
This is the problem that I'm having right now. I will give Arrow a chance and see how the season goes, but I will probably stop watching soon if it doesn't pick up. I don't want to bother with a show that genuinely feels like the writers are just there for the paycheck and have zero interest in the actual story (or source material).
(for the record, I know that I complain about the Arrowverse a lot, but it's not just this show that I have problems with. Supernatural violated its own reality for the sake of a Trump joke, and it still bothers me to this day. On top of their soap opera lighting, the weak excuse to bring back nearly *every* dead character, and tired angel/demon storyline, even one of my favorite shows can get on my bad side)