Would it be possible for there to be an algorithm in the future like the Mystery Dungeon games, where all four sides and corners of a wall are defined, with a single roof tile in the center?
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When you are using the snippet-based technique, you can adjust the change of "dead-end" removal in the plugin manager -> templates. Alternatively, when calling the generator, you can choose the template "classic maze".
When using the snippet-less technique, then go to plugin manager -> template -> *a template* -> when: cave, forest, ... and set "max number additional paths" to 0, that will also increase the chance of dead-ends.