So will there ever be new classic arenas?

The game is about getting stronger and then fighting with it in arenas, so what would I do with a nice deck, when I'm bored of arenas.

Same arenas again and again, I've only seen new shift chest arena, except that every other arena is same for months!

And can the timings of arena be changed so that new arena opens at different times of days, except at one particular time?

Hope gaea will respond to it