I don't know about dark and gritty plot lines and stuff but can any new Star Trek series have occasional appearances by Cosmic Horrors
and Eldritch Abominations
I mean Q pretty much said this stuff was out there is it too much to ask that Trek remember that scary stuff is also somewhere out in the galaxy.
That sounds good. More Doomsday Machines! Bring back the Borg, but treat them seriously. Being assimilated should be permanent, no exceptions.