I figured that was the reason. Goldar (originally called Fly Guy in the early pilot) had wings during season 1 but in Season 2 was retconned having them took away and restored by Lord Zedd.
The wings on the first release are optional. It just seemed like a downgrade to release the same figure (with a different color energy bolt) without the wings at the same price tag. I also think the wings on the actual Goldar costume were a pain during filming and wingless was easier to work with.
They made a Rita, but it's only available in a wedding-themed two-pack with Zedd. So if you got him already you'd have to double dip. On the plus side they painted his fingertips on the two-pack version.
The set was only available at Gamestop here in the states. Don't know about the rest of the world.