I haven't been in the forums as much as one would generally tend to be so i have not seen all the ideas mentioned in this thread. I have heard though that the idea of implementing purity into the field as apposed to the seeds or humus has not yet been mentioned. I think it would be a good way for players to feel more value in their base and it not be so disposable... players often just vault all their assets... they also might just up and move to a new town if their current one is under attack or being waste claimed. I believe this idea will give more motivation to stay and defend and keep towns populated to help do so. some innovative aspects ive heard to go along with the general idea here are;
-maybe make it so the fields can be dug up and the pure dirt can be moved on sleds and placed into another field to increase the quality of their own fields
-make it so u harvest the plenty out of a field, 1 crop at a time consecutively, over time draining from the plenty as u take from it and the rest can be tilled into the ground to increase the quality of that field.
-seeds can possibly take partial role in this system to help influence outcome of the crop(seeds having slight purity to them).
plz add any ideas to change for the better or improve the one posted here, thanks