There should be more Season 1 Luna stuff out there.
At leest I will do some engraving for the Galacon :3
I'd be more interested in a comic arc (or TV episodes) that's just paralleling the first season, centered on Luna's arrival in Canterlot and the consequences that follow from that. I'm working on a fanfiction series in that regard (you can read here if you're interested -> www.fimfiction.net/user/GJT_Pr…) but that can only go so far.
I agree. I love my life size Season 1 Luna plushie!