Hyper Tower and Doomland are pointless now that climbing is in place, before people had to actually strategize and work together to reach the top, and now its just "spam right click until you make it". Hyper Tower was super easy if you knew what paths to take, and now its just pathetically simple.
There are also glitches with ladders that let you shoot up super high into the sky, which is really dumb and unfair in certain circumstances.