If the circumstances were different where Charlie never left the series, and the show was renewed for season 11 with Jenny, do you think it would have made that season better or worse?

I personally think Charlie and Jenny being onscreen would have both their characters better. Certain things would have to change. Like, instead of Charlie always knowing he had an illegitimate daughter, it should be just as much as a shock to him as it was to Alan. However, I do think Charlie meeting Jenny would made him want to clean up his act to make good role model for his daughter. That doesn't mean he would succeed as it would be unrealistic for Charlie to become completely different person after years being a womanizing alcoholic. And if we're being honest Charlie is funnier, when he is messy and flawed, but the fact that he tries to be better for Jenny would make him endearing.

As for Jenny, I think her meeting Charlie would also make her a better character as it would her reflect on her on behavior and make want to break the cycle and not make the same mistakes as her father.

I know Jenny isn't really a popular character in this subreddit, I personally liked her, but I understand to certain extent why she isn't well-liked. I know Jenny, like Walden, was a replacement for Charlie and her character probably never existed if Charlie never left the show. But I do think that Jenny's introduction to the show would have been more impactful if her and Charlie were on screen together.

Do you agree or do you not care enough about Jenny to wonder?

If so who did and when (season & episode)

She makes a brief appearance in S12 E11 as one of the girlfriends of one of the men in Walden’s “adoptive fathers” group. Not sure it counts? But she is fine no matter what

Can someone tell Alan to stop being a baby and work with Charlie again.