In F1 2016 some teams did improve a lot (for example, Manor was 2nd in the third year of my career). However, other teams like Red Bull or Mercedes, didn't upgrade almost anything. So what? Did they have like 20,000 Research Points or what? Why don't spent them?
I hope the upgrades of the AI team would be much more consistent and frecuent in F1 2017. This would make more challenging and satisfying to take a middle-low team to the top.