I apologize for repeating myself with this, but I realized a few things I forgot to mention and there were some mistakes I forgot to fix.
I love the game don't get me wrong, but let me explain my opinion on the Pigbots:
Normal Pigbots: While not a threat, they are easy to deal with.
Pigbot Gunners: Like the normal Pigbots, they are easy to deal with, and its more fun when you destroy them before they get a chance to attack.
Blind Pigbots: Just a bunch of bozos who don't know who or what they are shooting at.
Rocket Pigbots: Honestly, their rockets are easy to dodge.
Elite Pigbots: They are bad in harder levels.
Kamikaze Pigbots: They too are easy to deal with, if you can reach the balloon.
Sharktihogs: I know they can only be found by water, but again, easy to deal with.
Walking Motars: Those are a pain in the butt.
Flying Pigbots: With some characters they are hard to aim at, and they flying into you before you get the chance to destroy them, unless you have the shield. They are also very annoying in swarms and I hate them! They are the worst Pigbots in the entire game.
Bat Pigs: They are easy to deal with, despite them not attacking you, but just like those stupid Flying Pigbots they will fly into you if not taken care of.
Also on a side note:
There are many glitches that need to be fixed.
Like how Blaster Bird is treated as a Deceptihog despite being an Autobird.
And some like Nautica Bird and Alpha Trion Bird threat Autobirds as enemies and Deceptihogs as allies, plus Matilda and The Mighty Eagle and Zeta need their actual voices instead of reusing others from existing characters.
If there's anything else I'm missing please let me know.