Couldn't agree more. I was on the 15th level (stage, whatever it is) and all these changes! I did finish the game but think the gigawatts and wrench (never figured out how I eventually got five point in the wrench icon nor how to use it) are worthless. You start me with 1000 gigawatts and then I can earn them at a pace of 2 or 10 (20 if the board is set up nicely) a play? Forget it. I'm not even sure I'm going back to the game now. It was great the way it was.
Also, keep in mind you can upgrade your Gigawatt earning power by spending Gigawatts in the "About Gigawatts" menu.
Personally on the starting earnings, without any upgrades, I can earn about 1500 Gigawatts in a game. Since you start with 1000 Gigawatts, very quickly you can upgrade your "Weld Gigawatt Tiles" earning, and then you will earn them at a faster rate.
We realize that some players might want to ignore these features. Perhaps those players will not score as many points if they ignore Gigawatt earning and spending, but many players ignored other point earning features of the game in previous versions (storing up multipliers, for example) and did not achieve competitive scores as a result.