That is the main difficulty - people get tired. I have a very low boredom rate - I am hard to get bored, so Tile Inserting suits me fine. But it also has its bugs...
I can do graphics too, but not to the extent of Title Screen (I can do Battle Backgrounds, but pallette changing I haven't attempted for that). Scripting, not yet, mapping... Eh, not really such thing as a great mapper, as it is down to style, but I wouldn't say I'm bad.