I'd love to see the variation of Midtown and Vostok as Crucible Maps going forward to add some interest and tactical switches.
To be honest, I think a quick fix for Crucible would be to roll out some altered existing places as Crucible Maps.
Hell, even give us Patrol areas as Crucible Maps to use these forgotten places. Can't remember the last time I patrolled but I'd love to get sniped all over the Mothyards.