I like that the bonuses have more than one potential affect. A big thumbs up on this.
Totally agree--adds great depth and thought to colony layout and strategy.
Seems like there are an awful lot of bonus tiles sometimes too, relative to GCII. On one of my planets in the last game I played, I had 7 bonus tiles out of 17 total. Not sure if this is too much or not, because they are so varied.
Other thoughts on bonus tiles:
The number indicator right aligned from the type of improvement (tool tip), which to my understanding is the number of total bonuses, could be clarified. Maybe a plus sign could be attached to the number, like "+3" instead of just "3" to show that this is the bonus and not the base value.
Sometimes the bonus arrows appear when no bonus is being given. Not sure why--it seems random (happened when I had a trade center on a +1 wealth bonus tile next to normal tile--every building I could make showed an adjacency bonus toward the trade center).
Use of the word "total" both in the base value of an improvement (i.e. total = +10%) and then in the adjacency bonus at the bottom of the tool tip (i.e. total = 30%) is very confusing. Neither are totals. Maybe this should say "base" and "total bonus" (respectively) or something along those lines (probably already in the works as part of the "in-process revamp of the colony management screen," but figured I'd mention it anyway).