Ok here is my take. I might actually copy and paste this and save it somewhere, and then look back on it next May to see if i was right or not on certain things.
Fox
All animated shows are all renewed anyway.
Empire will be renewed without a doubt. I am certain Lethal Weapon will be as well.
Scream Queens, Pitch. Rosewood, The Exorcist, Son Of Zorn and The Last Man On Earth are most likely going to be cancelled.
I think New Girl will be renewed for a short seventh final season
I am unsure about Brooklyn Nine Nine. It will hit syndication numbers this season but FOX do not benefit from this show as it is NBC produced. I think Brooklyn Nine Nine's future will be based on how well Making History and The Mick will do. If they do worse, then it will renewed.
Gotham and Lucifer will be renewed. Gotham is a season away from syndication anyway.
NBC
This Is Us, Blindspot, The Blacklist, Special Victims Unit and the Chicago Franchise will be all be renewed.
I think Timeless, The Carmichael Show and Shades of Blue will be cancelled. Shades of Blue wasn't really a success anyway and actually lost its audience after it was renewed. I can't see it's audience suddenly increasing when it returns in the new year. NBC were too hasty in renewing it. The Carmichael Show didn't do well at all during its second season and it's too far away from ever hitting syndication numbers by the time Season 3 airs in it's entirety.
I think The Good Place will be renewed and may be one of the first early renewals.
I am unsure about Superstore as it's ratings have been all over the place. I think it's future will be based on whether Great News and Powerless rate better or not.
CBS
The NCIS franchise, Big bang theory, Mom, 2 Broke Girls, Criminal Minds, Scorpion, Hawaii Five O, Blue Bloods, Madam Secretary will all be renewed. I think next season will be Big bang's final season.
I am not certain on the futures of Bull, Kevin Can Wait, Man With A Plan, The Great outdoors and Macgyver. Still too early.
Elementary, Code Black, Pure Genius, Life In Pieces, The Odd Couple and Criminal Minds: Beyond Borders. I predict Beyond Borders as a cancellation, purely based on the show losing viewers and performing rather poorly towards the end of it's first season.
ABC
Grey's, OUAT, Murder, Last Man Standing, Goldbergs, Modern family, Fresh Off The Boat, Blackish and The Middle will be renewed. I think OUAT will be given a short final seventh season.
SHIELD, Dr Ken, Secrets and Lies, Quantico, The Catch, The Real O'Neals, Notorious and Conviction will all be cancelled. The Catch was not even a success anyway and I think was only renewed to fill in a gap. A small part of me thinks SHIELD could somehow escape from cancellation but only if the new midseason dramas perform worse.
I am not sure about Designated Survivor as it loses its viewers more with each episode. It's already a hit 1.2. Too early to tell about Speechless and American Housewife. Both have remained stable in ratings though. I personally think both will make it to a second season but i am not 100 per cent sure about calling them safe at the moment.
The CW
Arrow, Flash, The Originals, Legends of tomorrow, Supergirl, Supernatural and Jane will all be renewed. I think The Originals will be renewed for a short final fifth season.
Frequency, No Tomorrow, The 100 and Crazy ex girlfriend will be cancelled. I predict The 100 purely based on the decrease in ratings on season 3. Plus with only 13 episodes in each season, the show is too far away to hit syndication numbers. So if those decrease in ratings continue for season 4, i think it will go.
I am unsure about Reign. I think Reign's future will be determined on how well the midseason shows go. Riverdale is the only other new show yet to premiere. As well as iZombie and The 100. I think Reign might sneak to a fifth season, but with another small order of episodes again.