Hi,
The place I'm coming from is that Construct 2 events are hard to read and follow, being all over the place and without handy modern IDE features to assist sifting through code, the systems in place don't work well (I would pretty much add the feature first and balance it later, only stabilize after everything major is in place, which it never was), and they're quite patchy and for the most part non-reusable.
I could try to give a general overview of all the formulas and what they were supposed to achieve, but otherwise I always thought that most of them have to be remade. It's not possible to build anything decent on a shaky foundation like Hardware Tycoon is and it's not like some kid with a passion project did anything irreplaceable.