I would LOVE to be able to play as a Froglok in classic times. I would drop so much cash. ...but even if they only make it the "playable" races, I don't think it would hurt anything.
For the EQ2 TLE servers they are making any race/class combo available if your account has it unlocked. Doesn't matter if it was through purchase of an expansion or a Marketplace purchase. Which is interesting as they recently added a race that can fly at fast mount speed.
In their defense, ability to fly isn't unlocked till 85. And the Fae/Arasai can also fly via a quest at 85 as well.