The freezer makes for a convenient way to produce ice over a long period of time, much like vanilla ice farms - or at least, it would, but currently the freezer consumes a block of ice to effectively make a single block of ice, as swapping out the empty bucket will lose enough time for it to run out before finishing the second bucket.

It would be nice if the freezer could be changed to make it more practical, here's a couple of ways I can see it working well:

• Require coal to fuel it. This incurs a different resource cost for producing ice and makes some sense as coal is Minecraft's version of fuel
• Don't require fuel at all, just have a slot for buckets to go in, after a while ice would be created
• Allow a block of ice to freeze more than 2 items. This would be the safest change, it's already enough hassle to swap the buckets out!

I hope something like these suggestions could be considered, as I'd love for the freezer to be a viable utility in the kitchen!