If you don't mind the time it takes, if you quit and then start up again, for about 5 seconds (hurry!) all the items are available. This would be painstaking to do for every grenade, bubble shield, etc, but if you don't want to have a useless map, then it is the only way
No clue. But it's the best unlimited budget canvas I've seen. It's so organized, I like that. And aside from that one rare glitch I experienced, I've had no problems with it.