First of all, its because I feel like I am signing the painting, but also because I myself would like to be able to read the text of the card for rules purposes, and so that you can show the card text to your opponents so they can read it. Dont think that this is out of the goodness of Ejsings heart, though
Durant is a very versatile deck, and Im sure that Durant players will find a way to get around Heatmor
Klara is actually one of the best cards in the late game
At 4 ink, you are investing a lot into this effect and, since it is uninkable, you have to play this if you draw it
Because her work doesnt invoke anything on that list, shes avoided a lot of C&Ds over the years, although they do come up from time to time
Given the game is now 15+ sets deep, reprints of early sets are unlikely