Since reading the post of the new "Colonization Pressure" mechanic, I was puzzled if the actual "Colonization Pressure" words would clearly reflect what was going on. So I have turned to my friend Chat GPT using the full changelog from Steve, asking the same question. Here is the answer:
Instead of "Colonization Pressure," you could consider using the term "Migration Incentive" or simply "Migration Pressure." These alternatives reflect the concept of individuals being incentivized or pressured to migrate to certain colonies based on various factors such as infrastructure, security, and population capacity.
However, I was still unsure, since if I understood properly, what is going on is that the higher this number is, the higher number of people will be unhappy at their colony and be willing to pay to relocate to another world with perhaps higher desirability. When highlighting this, and after several other conversations, we agreed on the following:
"Relocation Rating"
I think the Relocation might still be better than Colonization. Eventually we could keep pressure and go for the following:
"Relocation Pressure"