On the other hand, if Enzo stays dead, and we see Bonnie go through her 80 years of mortal life - what do you want for her?
I think I would want to see Bonnie happy and fulfilled.
I would want to see her move in without Enzo. Find new love. It might be hard at first but I think she deserves to give herself the chance to love completely again. I would want to see Bonnie find a caring and loving man, and raise a family with him that she gets to watch grow up. I would want to see Bonnie enjoy all the firsts with her children and her husband, pass down all her rich knowledge of her family line to her children and raise up a new generation of Bennett witches that are just as powerful as their ancestors. I would want to see Bonnie experience the joy of becoming a grandparent and having a special relationship with them like she had with her Grams.
I would want to see her find a career, perhaps as a teacher at the school like I mentioned in my other answered, or as something else entirely. As long as what she does if fulfilling for her and makes her happy then I would be okay with it. The big thing would just be that it makes her feel fulfilled as a person. I want Bonnie to do work that makes a difference in the world and in other people’s lives. Something that makes her smile when she wakes up in the morning and utilizes her big caring heart. Bonnie is so selfless and caring, I would want to see her channel that into what she does with her life. She would make a great advocate for people who need someone to fight for them. I could see her working for a non profit, being an activist, or even just being an advocate for witches and the next generation of supernaturals.
I would love it if Bonnie and Caroline and Elena remained friends throughout Bonnie’s lifespan. Bonnie genuinely loves both of them and I think they love her as well so I would hope that she gets to keep them in her life for as long as possible.
By the time Bonnie is old and grey I want Bonnie to have nothing left. I want to her have loved as hard as she could, to have received more love than one person can handle. I want her to have no regrets, nothing that she hasn’t seen or done. I want Bonnie to have carved out a wonderful fulfilling life for herself that was full of love, happiness, traveling, and laughter. So when she dies she’s content because she’s honored her live with enzo in the greatest way possible, she’s fulfilled her promise to him, the promise to live her life, all of it.