I find Masquerain's stat increases interesting mainly because it is a counterpart to Araquanid, who are both available at different parts of the day, similar to how Parasect and Shiinotic are available on different parts of the day in their encounters. Only difference is that Parasect didn't get a stat boost so Shiinotic is cursed with a low Base Stat Total.
The most surprising stat increase is Cryogonal, which I welcomed since I felt its physical Defence is too low, so now it takes physical attacks far better than before even if it's still not sturdy on the physical front.
Thank you for reading.