Why are Niko missions so rare?

From a SSF standard perspective new masters are all fantastic -excluding bugs- and there is plenty of delving involved so far. The way sulphite works would make it equally intrusive to normal mapping if there was constant need to empty your sulphite with delves.

From a SSF standard perspective new masters are all fantastic -excluding bugs- and there is plenty of delving involved so far. The way sulphite works would make it equally intrusive to normal mapping if there was constant need to empty your sulphite with delves.

Don't we have enough end-game things to do already? Delve could have been a mid-to-end game thing, were it not reserved to tier maps :/ Oh, and TOTALLY RANDOM encounters...