(Sry if some1 already had these ideas, I've only read a few posts.)
Samus' Gunship
Okay, the main platform is the top of the ship. (btw, the ship's design would be either the one from Super Metroid or Metroid Prime.) Every so often, Space Pirate ships (Like the one Samus escapes in at the end of Zero Mission) will come along in the background and shoot at the ship. If a hits you, you'll get about 10%, maybe 15% damage, but if a missile hits you... Well, you're screwed.
Eventually, the Gunship lands on either Zebes, Tallon IV, or maybe Frigate Orpheon, and while it's there, random Metroid enemies can pop up and attack you. After a little bit, the ship takes off again.
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Venus Lighthouse
Series: Golden Sun
Of course, the main platform would be the actual lighthouse. Saturos and Menardi are in the background, doing something (Maybe talking to Felix or Alex, I dunno...) and after awhile, they are about to light the beacon with the Venus/Earth Star, when Isaac and friends run up the steps and begin fighting them. After awhile, they win, but then the two evildoers fuse into the Fusion Dragon, and the skies get dark, and it begins to thunder. If the thunder hits you, then you'll be knocked back a bit, gain some damage, and maybe be stunned for a few seconds. Anyways, once they're defeated, they turn back into their normal forms and fall into the lighthouse, which causes the beacon to be lit. The ground shakes violently, and suddenly, the place begins to become separated and starts crumbling! If you survive long enough, then the lighthouse comes back together, and Isaac, Garet, Ivan, and Mia leave, and a few minutes later, the evil ppls come back, and the cycle starts over.
Next to the lighthouse are two pillars. The one on the right is a normal pillar that you can walk on, while the one on the left is actually destructible, in a way; if you attack the ground on it too much, then the surface will quickly fall down like an elevator, but will eventually come back up. There are floating platforms connecting the lighthouse to the pillars.
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Sry if you can't understand those, I'm not good at describing crap. =/
EDIT: I made a Golden Sun Lighthouse, but it's nothing like the one I described above.
Name: GS Lighthouse
Universe: Golden Sun
Comment: Rise, Golden Sun!
Song: Battle Scene/Final Boss (Golden Sun)
Size: Large
Background: Nature
I screwed up, so I had to draw arrows to where the blocks that fall are. The CPU sucks if they get into the spike pit, even on Level 9, so it's probably only gonna be real good if you use the stage in a multiplayer match.
Any comments?