Some of my top of my head :
- Westworld only had a first season for me.
Add second season for me, but definitely goes off rails in season three.
- Altered Carbon only had a first season for me.
Yeap, should have been a limited series. I only saw 1 episode of second season before giving up.
- The Boys only had a first season for me.
Absolutely. Writing is not good at all and seems to be just a surface level shock joke at this point.
- The X-Files had 9 seasons, a lot of episodes can be marked for me as do not watch even story arc ones. Excise complete new season ending. Keep old one.
I think the old 24 episode seasons and appointment TV allowed a lot more experimentation that lead to a lot of hit and miss episodes. Sometimes I miss it, but sometimes when I rewatch I realize probably not as much as I think.
- Star Trek, Stargate, Farscape: a lot of episodes can be marked for me as do not watch. Excise Farscape ending. Excise Stargate Universe ending. Give some thought to considering excising the end of Stargate from when Macguyver left. Definitely keep Voyager ending.
There's some negotiation with myself for this. I long considered Farscape to be a dumpster fire of mind-numbingly boring episodes and bad writing from in-the-day watching, with a terrible ending. Nowadays I think I'd mostly excise the ending.
Farscape was a lot of fun at times. A really cool idea that actually felt alien. John was the perfect vicarious character to lead us through this strange part of the galaxy or whatever. There just didnt seem to be any plan beyond the next week when it came to writing. The ending felt particularly weak and hurts my desire for any rewatch. Interestingly enough, Defiance was pretty much the same and both had Rokne S. Obannon involved. I'd say maybe thats something to avoid, but Evil so far is really good.
Thinking in relation to serial television, I think there needs to be more of a plan. That doesnt prevent aimless writing week to week though as some series definitely attest (Lost, Heroes, Manifest, etc..). Though, some of the highly regarded series and finales all seem to be tightly written, well thought out, and executed.
I think for genre series this is really difficult. They seem to be on the button from the get go so planning a 2,3,4,5 season arc is something that cant be counted on. Which means you often get the reset ending and an entirely new direction season that doesnt really need the previous season or build a particular strong following season (The Boys).
On the subject of the Phenomena genre (Lost, Manifest, The Leftovers) I noticed something. Whenever big reveals of why the phenomena happened or by whom, the show goes right into the crapper. Which is interesting becasue The Leftovers is by far the best of the genre and its not even close.
Finally, I'll submit The Watchmen series as a top 5 ending. I thought the series was well thought out and planned, executed expertly, and intriguing from start to finish.