@Treylina what would be the behavior of the freezer bullets? That's tough...
More fluid-like, so it goes in an arch? Without 360° aim control that would be uncomfortable.
Or it could be like the toaster, but with bigger spread? So it would be short ranged, but very hard to dodge.
And the upgrade could change the bullet's form to become one bigger "ice-ball" or something, that goes forward, but as it goes it could become smaller and lose its power. So if you shot somebody quite far away, the enemy would stay in ice form for only a little time.

Anyway, to make it balanced, the original one should not freeze the enemy with a single shot. With the first successful shot, the enemy would slow down, the second would make it even slower, then the third one would freeze it solid.

And the upgraded one could make the enemy solid with its first shot AND physically active, like a statue. A statue that can receive damage. But falling damage would break it so the user must think fast.

As for the breaking out of it... It should be possible, but not easy. Like you could make yourself move a bit in ice form with jumps or something... that would be very funny.
Just imagine, frozen rabbits trying to flail to the next cliff to fall down and break out.

For the seekers, my idea is just to make them explode when shot in midair. So because of this, you couldn't just spam them any time, if somebody shoots it while it is still near you, you'll receive the damage/blast.
Hmm... and how about the upgraded seekers not exploding with the first hit with a bullet, but just getting derailed? The seeking mechanism would be instantly disabled and the seeker's direction flipped. Then its movement would slowly become more affected by gravity and it would go down in an arch.



So, with that you're probably only gonna shoot one seeker at a time, because if one explodes, the others just spread, become directionless by the first one's explosion.
So if you use upgraded seekers, you must know how to use them, or somebody with more experience could send them back to you.

All of these are just ideas, and we only want to implement the ideas that the players like, so feel free to discuss or criticize.