I don`t know that I agree with redoing the formulae so that all the commons are equally used. Perhaps changing it so that some of the "major" artifacts consume a lot more of one important common compared to another which use a lot of another... make it more so that it isn`t just about digging for one type but perhaps making it more efficient to make several different artifacts concurrently. Anyways, I`m very much against making the formulae "balanced" in the sense of averaging it all out. That`s pretty lame.
As for the dig times, I obviously agree (rare time is at 3:30 am for me now, 4:30 am once DST changes again) so pretty much at the worst possible time of the day for a student who usually needs to wake up between 7 and 8. Something will be done about this, I imagine, if we can get Stephen on board. Remember though when suggesting changes to think of the possible complexity of the changes. I have no idea how Stephen coded the times in. The question is, does he? I`m told that he doesn`t know how to change back the viral increased cost changes, as he`s no longer sure what he did. Anyways, all I`m trying to say is, don`t get your hopes up.
Another suggestion that may (or may not, I`ve put absolutely zero behindysis into components for other artifacts) help is making some of the other artifacts - the ones that are either useless or currently only useful as components for bigger artifacts - actually useful. Assuming that this was done on a scale from uncommons up, it would certainly impact the common effects.
Oh, yeah, one last thing. You`re NOT going to find minor gordo becoming a lesser requirement for the high level items. There is solid logic behind that.