Limitless is pretty fun. I've watched all of those you listed. Yet "Immortals" I only watched MOST of the first episode last night and decided to wait for later.

As to Arrow. I watch a number of DC Hero shows. They often overlap (The Flash, Supergirl, Legends of Tomorrow, etc). The writing can be very predictable. Yet this is true of most stuff coming out of Hollywood, Toronto, etc these days... Same writers.

At least not too much political correctness/identity politics in most of those... some series I thought had potential I despise because they are pushing that narrative.

My kids and I watched the old Roswell series when they were young and enjoyed it.

So I was excited to see a new one. That excitement quickly faded. It is definitely one of the most SJW Identity Politics based series out there... It doesn't make it better. The stories are pretty damn weak, though not surprising when they seem more interested in pushing their SJW crap than writing a good story.

I also used to watch Madam Secretary. That stopped as soon as I saw the first episode of the most recent season where they literally had Hillary Clinton, Colin Powell, etc. talking to this fictional Secretary of State in her office. That was too much. Stopped watching it.

Saw headlines it went even more absurd. Glad I stopped watching it.

I did enjoy DC Titans which is very dark and different.

They have a new one DC Doom Patrol which seems different and darker too.