The UI looks spiffy, but is awful in practice. The previous one was so much more efficient and easier to use. Prices are harder to read, the pop-up achievement window blocks the donut section, switching between buying 1, 10, and 100 is more clunky than before, and I hate not being able to see how much money i have when I buy upgrades and managers. You basically tried to fix something that wasn't broken.
Great! I was so close to getting all the upgrades and then you add a whole bunch more! Now my profits slow down at the octillion mark and my billion angel investors feel paltry! GRAAAHH! YOU KNOW WHAT?! I'M GOING TO TAKE MULTI-BILLIONS OUT OF MY ACCOUNT AND BECOME BATMAN! It'll give me something to do while my profits take their time growing.
If you're having trouble, think about real estate. Keep your largest number in a corner and build a path in descending order in a zigzag pattern so that you can compress them into one each time. That way, no matter how large the number is, you have plenty of space to work. What'll really kill you is careless error. The larger you go, the harder it is to recover from it.
I'm not sure what happened. Maybe there was too many bullets on the screen at once? Whatever happened, there's nothing on my screen anymore except for the background...
Scroll bar and a clamer scroll wheel will come very soon. Thanks for the heads up!