<<"I'm assuming this would be do-able as a 1/2 day hike following our trip to Mt Pilatus?">>
But, timing will be critical and might limit the possibilities.
You'd need to confirm timing from wherever you come off Pilatus. Then, you have to catch transport to your chosen railhead. An option could be to get to Stans and take the bus #311 from Stans to Seelisberg, then start the walk there. If you start at Bauen and go up. you have to get to Bauen. That would most involve a lakeboat from Flüelen or Brunnen. so you'd have to get across the lake somewhere. My sense is that a boat all the way from Luzern would take too long. So, there would be some complexity with the access to or from o Bauen in a timely fashion - either starting therer or finishing there.
I have always done that in the direction from Seelisberg.
The hiking options that I describe in my thread are related; many people want to include Rütli because of all the important Swiss history associated with that small meadow. It is where the Confederation was founded by the four forest canons:
The hike as described in the link you noted is straightforward. The only moderately strenuous part is the 400 meter climb on a very good path from Bauen up to the plateau.
However, the lake views are better rounding the promontory from Rütli to Volligen, on the hike that I describe. In the stretch between Bauen and not far from Seeliberg, the lake views are limited, except where the Wanderweg approaches the clif edge at Marienhöhe.
The lakeboat ride to/from Treib or Rütli is quite nice, and the views from the Treib-Selisberg funicular (up or down) are very nice.
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Whichever trails in the area you choose, remember the limited lake boat service from Bauen or Treib (at the base of the funicular from Seelisberg) late in the day. The late day option is the bus from Seelisberg via Emmeten to Beckenried and onward to Stans or Hergiswil. The last bus is at 2317.
The last boat from Treib to Brunnen is at 1834 ( via funicular from Seelisberg at 1820). The last boat from Bauen ( to Flüelen) is at 1744.