Realm alert is far more important in this regard than Nox. (As it is with income, Nox' effect would be cumulative, yet you get the majority 'cut' from realm alert itself.)
Proposed idea:
When changing realm alert, your UP/Income changes. If you do not change realm alert (i.e. keep the same, which is what inactives will 'do'), UP will remain equal to what it is now.
This has the benefit of not changing the raid farms, but negates the 'tightening market' effect (which can be seen as bad).
Given the game's reluctance to update UP when you do not log in, unless someone becomes your officer or otherwise directly affects your UP (steal UP planet, etc).. that would be viable.
On to actual numbers however.. effects in the order of magnitude of the numbers mentioned can be rather dramatic for Plague-sized accounts, while negligible for smaller accounts.
Since this has no effect on Raiding, this would be an update favouring the sub-Raid limit accounts (and that might be a good thing, would be a change).
What I am curious about is whether or not an update like this would discourage using Realm alert. When combined with the 1min log delay, a too strong negative effect on proper Realm alert management could be too much of a 'force activity x' update.
Personally, I do not think it would go too crazy, but that is why this thread exists.. pros, cons, numbers.. discuss.