Hey Sir!
Sorry for my bad english, but i will try giving my best to give feedback.
I'm not long into this Game atm, but i will definitly play it the next days, because i like it very much atm.
As far as i see, this Game have much Content. I like that. Yeah it is grindy, but atm i dont think its too much, its possible and take time, but thats okay in my opinion.
I see there is a option to buy GameSpeed Upgrades, but maybe make the first upgrade (speed 3) little bit cheaper, maybe.
I will write you more Feedback in the next days. Latest at the Weekend :)
And, Good Job btw, i really like it so far.