I picked up a Chasm escape playset recently, incomplete. Forgot how bad these were.
I recall from prototype phots that the bunker set was originally to have opening door feature, makes more sense than a spring loaded tree branch.
The Endor sets was best simply because Kenner never made the bunker front.
The Dagobah set never got made.
There was an Echo base backdrop dio planned to include a Hoth Leia, also got canned. Not sure pictures even exist.