Thanks for the feedback (and sorry for the delay, it's been a hectic month).
Regarding storage levels, an interesting idea, I've added it to the todo. I'll make it optional like the other types though so people can turn them off if they'd like.
The trains... I'd have to look at :) With the way UMB does text, I'm not sure how that'll interact with moving objects.
For the column on the left of the screen - I've thought about trying to do something like "find me factories running less than 90%" or such through that interface, but in most factories unless you're just an absolute deity at ratio perfect designs, you'll have SOME parts idle SOME of the time - so what would be the threshold? Etc. etc. That's a bigger project...
Thanks for the ideas!