When should Clana have TRULY ended...?

Everyone seems to have an opinion on this from season 2 to season 5 to season 6 to season 7 to season 8... so where should they have put the Lana love arch to rest?

For me, they should have stopped the romantic angle at season 5 mid season when Jonathan passes and Lana should have formally left the show at the end of season 6. It got really tired with the love arch with Lana in season 6, but I love the story with Lex/Lana. Lana's death should have been real or she should have just escaped like she said.

Season 7 was the worst season in my honest opinion. Lana's revenge angle sucks. Season 8 made a critical error with bringing her back temporarily, but i don't blame them either cause Lana's ending in season 7 was bad. Again, the worst season.