I've recently posted the question What is the best way to bring a campaign to an end? on the Role-Playing Games Stack Exchange, but it was closed because it ended up seeming too broad or just phrased weird.
I am having a hard time narrowing down the question to a singular problem. Should I just stick with the end question of "Is boredom a valid reason to end a campaign?"? Or is that also too much of an opinion-based question?
What could I do to improve it and allow it to actually be a question that can be answered? I want to narrow down the question so it's less opinion-based and more focused, but cannot for the life of me figure out how.
I'm really hoping that I can get the question re-opened, because I'm pretty sure the answers would be really helpful for me later on.
Current version of the Question
This is mainly just a question I decided to ask out of curiosity because sometimes I can get bored of a campaign and I wouldn't want to end it because the players could still be enjoying themselves. The players have mentioned they liked combat scenes but would appreciate more opportunities for them to express their characters with role-play. With being a very inexperienced DM I know next to nothing about good ways to add changes to the campaign.
I'm currently just playing in the Eberron world with a homebrew questline and I don't really have a fully set idea what the players should strive for. (mainly because I cannot think of anything enjoyable)
I don't really want to end the campaign but with no new ideas coming into my head to spice up how the game is played it's really hard to bring back the enjoyment from when the campaign felt fresh and new.
For me, the combat appears to drag on too much and that limits opportunity for roleplay. I have discussed with the players and gotten mixed responses. Some like the combat and some want more roleplay.
As DM, I would like more roleplay - but I also want all players to be happy. How can I adjust my campaign to do this?