can get Launchers which are simplified and/or make the icons very big and easy to see. basically designed for old people or less tech savvy people.
dont have any launchers names on hand but i know ive seen a few on the playstore
am sure "Startup Manager" app can block unwanted apps from starting up but can also start certain apps on boot like xbmc(Kodi),
Maybe a scheduler app that make certians app autosync as and when needed
probably need root access for startup manager or scheduler/task apps
dont need to edit the rom for any of these
just keep a backup of the rom
when trying to teach my dad a bit of tech (windows pc) i just said go wild on it, as long as he didnt physically break the box then i could always fix it. knowing that it could always be fixed gave him the confidence to have a mess round and learn himself.
Nokia 3210, Nokia 3330, Nokia 3510, Nokia N-Gage, Samsung D500 , XDA Mini S, HTC S620, Nokia N70, LG Viewty, LG Renoir, Apple iPhone 3GS, Apple iPhone 4s, Ployer Momo9, Ipad 3, Sony Xperia Z1, CS918