I know I’m rather late on this, but I’d like to put in my votes for some of these ideas.
- I think the Bladedancer is best as lightly armoured, swashbuckling-y sort of fighter.
- c,d,e. I prefer having just general information about the borderlands or wilderness areas, as well as the areas between cities or settlements.
- Centaurs, Lizard Men and Gnomes are all great. Ogres/Giants/etc. or the like might be interesting as well. I’m of a “more is better” thought on this front - I think it’s easier to ignore stuff you don’t want to use than to try and cobble together working rules after the fact. With that said, I prefer the full blooded races to the half-orc/half-elf/etc., types. Though it might be interesting to have proficiencies that indicate you have heritage of a certain type.
- Druid please! I don’t know why so many people seem to dislike them, but one of my players was really disappointed that there were no Druids (specialized Clerics just don’t cut it for her). I also think their late game play would be interesting - creating a grove instead of a temple, etc… Barbarians are also cool - setting up a viking-type domain could be fun. As with races, I prefer to have more options rather than less, as it’s easier to just ignore the classes you don’t want to use.
Anyway, just my thoughts. Even if the core books was the only one published it would still contain more awesome than most entire product lines do - you guys have all done a great job!