Here's how I think it works:
1. Iron and water? Science.
2. Poor water overall? Robo.
3. Good selfish BM (claims)? Scav, if not founding too late.
4. No iron? Robo.
5. Otherwise expansive.
I think the game is only interesting when at least one or more resources is very poor.
This is how I scan the map when the debt timer ticks
First you look at how many rescources there are total on the Market >
View the Map in 4 dragclicks >
Godtiles(Iron and alu in one tile) go Robot (Found at 45k Debt) >
If with alot of people look for Alu and Sil closeby so you can do Robo Power Play (also look if there are no Double Geos,Which can ruin your strat)(Found at 0k Debt) >
Are Iron and Water/(Sil) Closeby eachother? (both connected if you have your Hq placed down) Science Play (Found at 33k debt) >
Not Alot of (High)Water on the Map? ( Water(?)/Player(?)= If below 4 = Robot (Found at <33k debt) >
Not alot of rescources in general?(but in high volumes)also Geos??) Expansive (Found at <33k debt) >
Is Carbon Good? (Good as High/Medium Carbon with atleast 2 low carbon connected)(preferable with claims on the market) Scavenger ( Found at <25k debt) >
(Some1 else founded the location you wanted)(Leaving you with non of above^)>
If high Iron(preferable with low connected) still exist go Expansive // if cluster Iron still exist go Scientific (and water/sil nearby) // Not enough water closeby? but High iron/alu nearby?(and preferable sil) go Robot // 3 low carbon(or 2 high separate) your only choice? go Scavenger
Everyone has their own preference. mine is Robo>Science>Expansive>Scavenger
Note That < debt relies on How many other good spots there are on the map.