There's a misspelling, and the groupings are obscure.

Sorry for the misspelling, I’ve updated and re-submitted. As for obscurity, doesn’t that just make the grid a higher difficulty level and not a reflection of the quality?

Grid subjects are down to the compiler, therefore no complaint there. That the player has no knowledge of the subject matter is in itself irrelevant. However, I believe these grids should (in theory at least) be fun to attempt. When failure ensues the player would like to know what the compiler had chosen and why etc. I find it helpful to have at least 1 "in" to help the player, unfortunately I found none. So although there is nothing wrong with your grid per se, people will grade the quality based on enjoyment, satisfaction as well as recognition of the final outcome.

Following on from comment by oooops (and comments on grid 43668). What this site is missing is an enjoyment rating. Then you could happily give 5 stars for quality even if you didn't enjoy it.