I do not see any issue.
But in practically speaking value should be less. What happens is if there is any error usually DBAs look that this session needed more open_curso and then look the code to figure out why it's requiring that much open_cursor. Mostly poor developement.
If you increase value mostly you will not able to figure out these kind of situations.
only disadvantage is if the cursors are not closing properly in the application code then the open cursors keep filling the buffer. Usually this won't happen in the base application but if there is any customizations done then there is a good chance that developers are forget to close the cursors properly or just overlook.
Try hard to get what you like OR you will be forced to like what you get.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.