Now the most valuable strategy is "just double most powerful crop you have".
You can combine +/- crops, but result is not worth it. x2 combo is always better.
How to fix it:
- +/- crops should be much stronger than pure ones
- Most of crops should be mixed, may be except for Psychic (holly) and Dark (cursed)
- Add combinations that are revealed by using exact types of fertilizer to reduce all negative effects.
- Strong and weak crops should be evenly distributed throughout seasons.
- Come up with something interesting for EXP crops. Now you can just feed it to you spirits raw, brewing EXP concoction is worthless.
- Alchemy should remove stamina effect, we have cooking for it. And it also worthless.
Extra wishlist:
- High-tier Alchemy Lab that allows to mix more ingredients
- Different types of filtration medium with different effects:
- amplify/reduce effects
- transform one effect to another
- reverse values
- reduce ingredient usage
- Extraction station, that allows you to extract one exact effect from mixed crops, but reduced to half. And then use it as extra reagent in high-tier Lab to reduce unwanted effects or as a crafting ingredient in Anvil/Enchanter/Cauldron.
- Add really rare ingredients, that you can not just grow in the garden in an unlimited number