1. Start with cooling.
Some sort of cooling for the start would both help speed up the gameplay and be more in line with the classic homebrewing experience. I don't think I know anyone who didnt at least try to improvise a cooling solution and it's pretty important to brewing overall.

2. Different gravity units.
Where I worked we used Plato and some other industries use Brix. Having the option to swap
to what you prefer would be nice.

3. Different measuring units
Ties in to the point above, atm I only saw metric but maybe throw the americans and british a bone by including their systems.

4. Better temperature balancing on the stove.
During mashing the temperature kept increasing or decreasing too fast and even when i only scrolled one tick on the mouse the temperature had a tendency to rocket away from what i consider acceptable margins.

5. Fitting more malt in the pot/pot with a mash bed.
I can totally fit more than 2kg of malt in a 25 liter pot, come on!

6. Yeast behaves weird.
I underpitched the yeast in my first beer by accident but instead of rapidly multiplying to proper amounts after a week like it should have, the original gravity had only gone down by 0.002, producing less than 1% alcohol. After 2 weeks it had reached the expected final gravity so at least it seemed to balance out.

7. Carbonation before taste testing.
Atm it seems like you can only produce flat beers because there is no option to bottle ferment before taste testing. I know pushing co2 into a keg is planned but bottle fermentation is a classic way, plus you get to add bottle explosions for the true experience!

8. Egg timer.
I know it's been mentioned before, but it would really help a lot when simulating the true experience. Atm it's kinda hard to keep track and I just ended up chasing numbers instead of using the proper process.

9. Step by step recipes.
For the less freeform of us, planning a brew, following the steps and seeing the results would be nice. It could also help people not familiar with brewing with getting an understanding of the process.

10. Brewing outdoors.
It's nice and relaxing.

Nice concept so far, I'm looking forward to the full release!