A slightly different "highlight": The already heavily lost glacier area around the rocky edge (3000 m) is a major construction site in summer. The cathedral, the highest pure Swiss mountain, as an excavator background motif. The terrain is "trimmed" for the winter, smashed large rocks, leveled, the glacier lubricated. The Alps as a fun and event park: is this what we (still) want?
The Felskinn is middle station to the Allalin or starting point to the Britannia hut. It is also a descent to the Mattmark reservoir possible. There is also a restaurant there. However, I would prefer only the view other stations.
A tour to the Britanniahütte is always worthwhile. From there you can also descend to the Mattmark reservoir and Saas-Almagell.
From the Felskinn you can also take the cable car up to the Mittelallalin and from there, if necessary, climb the Allalinhorn.