There are several words in there that are perfectly common words to me; equally I'm sure that there are other words that others will deem common.
Looking at it from a different point of view, though, if 'thoracic' for example is made rare, all it means is that the rosette will be awarded for, say, 34 words instead of 35. It won't make a ha'porth of difference to getting the word or not. It won't even make a difference to people's percentage hit rate.
Alan's review is as good as anyone's (PLUS he's the boss!), so my humble suggestion is that we accept the list as written rather than go into an endless debate about individual words.
I wait to be shot down in flames!