Late to the party re: squares, but pike squares do have the advantage it can be formed even in tight spot where you'd assume it would scale by the mod's logic at the expense of being bit worse at shooting and arguably negating a little bit of the magic forcefield. Only disadvantage is you can bruteforce them more easily with cavalry if it's just a sole square (depending a bit on the cavalry of course) and sometimes artillery is perhaps too effective, but I think it's a worthy tradeoffs over the fact you are less constrained by space and pike square takes longer to form for shooting to be effective even if the force field is still there.