The thing is I have no idea what changes I may need to do (it all depends on her user experience), so I was thinking perhaps if I created a custom ROM that removed all permissions requirements (so for example, ACTION_CALL would only require normal, instead of system, permissions) I'd have the most flexibility in adjusting the UX.
No one else but my grandma will be using this phone, and no apps will be installed by anyone but me, so security doesn't seem to be an issue.
Is this a good idea? Would this be hard to do, or would it just be a search and replace job in the code?
thanks for any help!