Thanks for the welcome!
But I actually do anything for the income.
When I perform 5 tax, or 20, or the default 9 - it all changes extremely (as intended) but changing back to 9 after a while from 5 may cause all the (erm... BNI in my language) to drop almost fully down at negative.
Though, I am actually very carefull when it comes to density. I have a variety of low, med and high. I usualy have low for 15min, med for about a hour and mix for about another hour, and then high... Yet, it's quite hard to maintain 100K+ at a steady income.
Maybe I'm just a *****, dunno. But doesn't explain that I'm almost forced to do everything to allow growth...
The only times I really get good income and good growth is to build a river in the middle where industrial is 100% on the first side and mix of the two others on the other side which still messes up the pendling and roads.
All other strategies tend to just screw up lol.
But to say it blankly, I think the game is actually broken when it comes to the difficulty and certain needs. As written, firemen is mandatory - water or not if theres a single unmarked spot theres a 50% chance per minute to catch fire. <_
Criminality also never stops even if I have 100 prisons and 25 police departments. (confirmed by myself using Weaknesspays)
Study is also another problem, even if I build 1 of each (H-School, University, Library, Museum, etc) in a district, they get like halffull on the study even with the light density.
Frankly I think the rates is just too high at requirements and have it hard understanding if it was a part of the game that it should be this hard even on "Easy". Though I tried "Hard" and there's actually no difference except the start cash and the rate of catching fire.
Might be a tiny theory that the difficulties is simply just messed up.