I snap my finger and 99% of research disappears.

And I call that mercy.

All your currently accumulated observations become Fundamentals observations
All your currently accumulated theories become Fundamentals theories
All future observations also become Fundamentals observations
When theorycrafting, all theory progress is merged into the Fundamentals category before you complete the theory.
All research is patched to only require Fundamentals observations/theories
All consume tasks are limited to 1 item (ex. one of the Thaumic Arcana researches requires 10 sticks. With this mod it will need only 1 stick)
All researches are limited to 8 consume tasks (ex. one of the Thaumic Arcana researches requires 12 or so items. With this mod it will need only the first 8 of these items.
All crafting and discovery tasks are limited to 4 per step.
Consume tasks cannot have meta when the item has no subtypes. Fixes Thaumic Restoration toast.
Config options for all of the above.
Put a smile on my face.

Also check out Thaumcraft No Research. (for reference, this will give you pretty much unlimited theories/observations)

Thaumic Mercy