Instant Icicle Generation that Helps Traps/Minigames Reset Faster

Mechanics:

• Icicle under packed ice under water, creates the generator.

• Regrows very fast within seconds

-Useful in traps/minigames that want the falling dripstone mechanic, but would take too long to reset. 

• Only drops item with silktouch

-Consistent with other natural ice blocks.

-In traps/minigames, this prevents item lag and inventory clutter after too many falls.

-Game-balance-wise, near instantaneous generation, but un-automatable farms.

Reasoning:

I just think that the potential of dripstone, sulfur spike, and icicles, specifically their falling mechanic, are underutilized in vanilla survival, due to the time-gated-ness of their regrowth.

Imagine a parkour course that requires a player to complete a section in a set time pattern before the dripstone/spike/icicles fall again. This would be impossible in their current state in vanilla survival. So maybe, a fast growing version of the dripstone type blocks could fill in this niche.