As per the poll, I will be running a 1 month trial of Jump II potions in the game. After that time I will decide (with your help I’m sure) whether it is staying or going and any further balancing changes.
What are the changes?
There will now be a splash potion of leaping with a duration of 10 seconds and amplifier of 1 (aka jump boost 2). It will have the same chest spawn chance as all other
It will look like this:
The keen eyed of you may notice this is the same colour as the 12 second splash potion of poison, and that is simply due to technical limitations. I will look into solutions for it but for now make sure you read the labels of what you are consuming 
Other changes?
I have also made some other minor balancing changes of which are now live. They are the following:
- Splash potion of poison is now 12 seconds (down from 15 seconds).
- All positive potion effects now have a 4% spawn chance (except instant health 2 which remains unchanged).
- All negative potion effects now have a 2% spawn chance.
- Cobwebs will now have a lower spawn chance and will have less of them: 1 cobweb @ 5%, 2 cobwebs @ 3.5%, 3 cobwebs @ 2%.
- Water buckets have a reduced spawn chance (1% down from 2%).