I added a strut tower brace couple years ago too! Too many changes maybe!Did you get the Pilots before, at same time or after the springs and struts.
Stiffer springs and original tires, you don’t feel so much difference.
New tires and original springs, you’ll appreciate tires but still not drastic difference.
Now combine Pilots with stiffer and lower springs, plus no more deflection of struts due to CC pates, and you have huge difference.
Stiffer sidewalls on Pilots do give slightly harsher ride than OE tires.
Because they don’t fold easily.
Everything affects something else.