I like the maker, the increase is noticable and can actually help to earn money.
The hemisphere option is a lot better than the breakdown version, mostly because the latter could have been insane.
Breakdown version; lvl 20 pure tele: 40 hands
Allows for one pane of 205'x205'. Thats 1681 individual 5'x5' panes. Since 4 of those make the 10'x10' shield that would come to a maximum of 420 individual shields he could create...who needs the maze spell.