Great point about the number of dice, actually! I was never super overwhelmed, but I suppose that just meant you did a good job limiting the number I had to use. Perhaps you could let the player combine their smaller dice into larger dice somehow? Or you could try a click-and-drag box or Ctrl+Click/Shift+Click to select multiple dice at once, so you can drag several dice at the same time? I think there are definitely some options if overwhelming the player is the main concern. Perhaps you can even let the player sell dice, though I'm not sure why you'd ever want to.