I've really outgrown toppers. Back in the day I used to make my own toppers that were integrated into something in the machine (like the TOTAN topper with the jewels tied to the playfield mode lights). I actually made a Stargate one with a swirling "ocean ball" inside a hand made and painted gate. The chevrons had LEDs that were tied to the Stargate modes on the playfield. However, now that I've "grown up" I just don't like any toppers any more. I've taken all mine down. I think most of the toppers I see on other games look kinda stupid, frankly.
That said, this thing is pretty sweet. If I didn't have 100 higher priority places to throw $200, and if this wouldn't be an orphan as the only current topper game in my collection, I'd actually considerthis. Very nice work indeed!