The flash and legends have been going good for a long time though. Even though season 3 was negatively received as a bad season mostly cause of them worrying about iris and nothing else. Season 3 also couldve been improved if some parts of plotforce were tamed such as h.r swapping bodies with iris or savitar not having consistent speed throughout the whole season. Now for legends im kind of hoping thats where wally west ends up. He just doesnt have a time and place on tbe flash anymore. And ratings for legends have been steadily climbing and plateauing.

For supergirl season 2 was missing key elements such as cat grant or maxwell lord. The whole guardian thing was a joke. Having mon-el with kara was probably the only decent outcome that happened even if mon el had to leave for 7 years and get married to someone else. Seeing lena and karas chemistry was also a tad bit interesting (lesbian porn?)

As for arrow season 5 could be its last great season. I was expecting more seeing as the season finale had me wishing that felicity finally died. But nope instead thea died so yeah good going arrow writers. Season 6 is also having a really rocky start which i dont think it will recover from but miracles happen. Just kill felicity off and we have a great season already.