Related to SELinux inefficiencies on XFS (due to inode size), sometimes mkfs options need (or are wanted to) be customised. XFS provides options for things like log size and inode size which can make a big difference in system performance. On the 'Modify' screen in Disk Druid, it would be good to be able to customise these options via the GUI.
Will help fix: Default isize of 256 bytes is too small for SE Linux https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=120622
anaconda is not going to have a text field added that's "insert your options here". It's completely and utterly non-intuitive to users. ancaonda should be setting the "right" options to begin with (and arguably, the tools should have the right defaults as well instead of leaving it to the user to guess and thus get it wrong nine times out of ten) If you have explicit requests for modifications to options used, those can be filed and will be considered on a case by case basis.
I probably wasn't clear, sorry. I was meaning to suggest having actual visual fields based on what options mkfs can take. (i.e. a set of text fields: one for inode size, one for log size etc). i agree that one giant text field is wrong, but a set of fields could be a good idea - especially since there are legitimate reasons to want to modify some FS parameters.
The problem is that these can't really be done generically as different filesystems have different options. Even if they didn't, it's still incredibly obtuse for the user.