Some of these are date dependent, as stated above
—panorama trail: männlichen-klein Scheidegg
Cable car to Mannlichen from Wengen will be Open, but Trail TBD because of snow
—murren to grimmelwald hike
The road from Murren to Gimmelwald is paved, so it will be fine. Do know that it’s 1,000 ft of downhill walking, so some prefer the cable car and saving their knees for a nature hike, instead of paved road.
—Mürren Blumental “Flower Valley” Trail
This starts up at the Allmendhubel funicular behind the restaurant. Opens June 8 and is a short family/kid trail. If you can do around 700 ft of elevation gain and your dates are after June 8, ride the Allmendhubel up from Murren and do the North Face Trail counterclockwise from Allmendhubel to Murren
—murren-grutschalp hike
This is also a paved road, so it will be open. It’s not as breathtaking as the North Face hike or Mannlichen Panorama Walk, so use it as an option lower on your list.
-Hiking behind staubach falls
I wouldn’t personally waste time doing this. Enjoy the falls from the ground and consider renting an ebike from Imboden in Lauterbrunnen town to bike the whole valley to see the various waterfalls. I think that’s more enjoyable than walking up behind those falls.
—trummelbach falls
This isn’t a hike. You can stop there on a bus or walk or bike as mentioned above, but once you get there you have to pay to ride the elevator up and it’s a very crowded place
If I had 2-3 days in the area, June 8 or after, staying in Murren I’d do something like this…
1 day - Murren > Allmendhubel > North Face Hike counterclockwise to Murren ending at Schilthornbahn > optional ride up to the Schilthorn for excellent expansive views > optional ride down to Gimmelwald or if you still want to walk, stop at Murren and walk down to Gimmelwald > cable car back up to Murren
1 day - Murren > Wengen > Mannlichen > Walk to Kleine Scheidegg > Train back to Wengen and head down to Lauterbrunnen where you can take a bus to Trummelbach Falls or if you started out early in the day, perhaps you’ll have more time to rent an ebike and bike The Valley/falls
1 additional day - If staying in Murren, you could ride the Allmendhubel again and do the Mountain View Trail that walks from Allmendhubel to Grutschalp and then optionally train back or walk back to Murren from there. Or if you’ve had enough walking, do a boat tour on Lake Brienz or Lake Thun.