We are using O365/Sharepoint Online 2013.
This question might sound a bit silly, but is there any downsides of removing ALL the default permission groups from Sharepoint Online and creating our own? There are default groups such as the Hierarchy Manager that we just don't need. I remember I read from somewhere that there might be complications if those default groups were removed.
I have been trying to think about it and can't come up with any logical reasons why there should be any problems. Still I wanted to make sure and ask around in here to see if someone has good or bad experiences regarding this matter!