I think it would be great if you could link them to production. It could be possible in a few ways:
Certain score levels could provide an additional quality bonus to your production output, for example:I have 30 score and produce apples,
(apples Q1, water Q0 and seeds Q1) for a score of 30 you get 1 additional Q so it would be Q3/3 = Q1 apple, then for a score of 300 you get another Q bonus etc.
Or same thing could be applied for improving the speed of production instead of additional Q or maybe lower production costs, but personaly I do like the Q-thing most.
