So, I've tried to implement much of your feedback.
I've also got some interesting mechanics implemented, but it makes even less sense now, having no theme, at all, anymore.
Here is a video of the monstrosity in action.http://youtu.be/oSeWDQnq1RI
This video shows a working prototype.
The graphics are only place-holders at the moment, and will not be used in the final game.
Summary: Player moves around screen shoots guided missiles at scaling objects; scaling objects come under player control; scaling objects can be set on trajectory to collide with z-space object. Z-space object (wormhole) expands and alters inertia (gravity) of play. Goal is to either collapse or expand (move away or near) the Z-space object.
Play mechanics demonstrated:
Player lateral movement with mouse buttons.
Player vertical and Z-space movement with mouse wheel.
Missile Agent launch and guidance (green balls) using mouse cursor.
Gravity inertia (disabled for player).
View rotation based on lateral movement.
Asteroid z-space 3D emulation scaling (white squares).
Asteroid Z-Space collision detection (white squares with red X).
Asteroid target conversion (collision with Missile Agent).
Asteroid piloting with mouse cursor.
Asteroid trajectory to Event Horizon of wormhole (orange/red ring).
Player and asteroid entering Event Horizon in Z-space (wormhole graphic scales up).
Creator's head lodged way up his own ... (off-screen)/
Here are my theme ideas. Which one sounds interesting and looks like it might fit with the core mechanics?
Wormhole manipulation via Satellite and Asteroid Wrangling
(this was the original theme)
Lion tamer at the circus whipping and managing hungry lions that try to eat the audience and yourself.
Planet of the apes slave driver trying to keep those damned-dirty-humans in line.
Sweeping scorpions into a dustpan as they crawl up the walls and up your legs.
Rolling coins into a funnel. (not much of a game)
Hockey player charging for the goal.
Cowboys roping (lassoing) cattle during a stampede.
Spiders and flies, webbing and wrapping and drinking, etc.
Zombie/monster wars: zombies versus monsters in a free-for-all RTS with player intervention like Herzog Zwei.
Roller derby / roller ball
Slave master of Gor (this one is pretty naughty).