This will likely be opinion based
If I'm reading it correctly your proposed question is something along the lines of:
Is it a good idea for a campaign to have the party cursed such that they cannot go too far apart?
Problems that make this a poor SE question
As stated your question has a number of problems, mostly to do with insufficient detail. If you edit this question to include the full text of your proposed question it will likely address most of these.
- How far is too far? You will need to define the relative distance allowed between victims of the curse. 30ft is a very different discussion to 10 miles for instance.
- How is the curse enforced? What is preventing the PCs from simply ignoring this curse?
- Is breaking the curse the main premise of the campaign? Or will there be other plot lines and the curse is merely there to prevent splitting the party or coming up with a better reason for them to want to work together?
To remain as an open question you will likely need to address most of the points above, as well as any that get raised in comments on the question.
It's still likely opinion based
Our opinion-based closed reason states:
This question is likely to be answered with opinions rather than facts and citations. It should be updated so it will lead to fact-based answers.
Unless you can state the question in a form that will attract factual answers it will likely be closed as opinion based. "Is X a good idea?" will almost always be opinion based. However it is possible to form a question such as "What additional challenges will this curse pose for my party?" or similar where you focus on the mechanical limitations your curse imposes and how you might prepare for or mitigate those issues. How you tailor this will depend on exactly what kind of answer you are trying to get out of this.
Try a forum or chatroom
Ultimately it is possible to get this question into a format that could be asked on SE, however by that point it is likely no longer asking what you really wanted to ask. I gather you just want to bounce your idea of the collective wisdom of the community and get some feedback before going to far down the rabbit hole. That kind of discussion is much better suited to our chat room or to one of our curated list of forums. Good luck, hope you find the answers you want.