Suggested previously in part.
Scaffold blocks would be made out of sticks and you wouldn’t have to crouch to keep from falling off - you’d have to jump or grapple to get off of them. Make them uber cheap to craft. Should be hand craftable. Possibly even a free recipe like totems.
Scaffold bombs only do damage to scaffold blocks, damage them even in beacons, and destroy them in one hit. That way when you are done with your build you can scaffold bomb it to get rid of all the scaffolding. Also it would be cool/realistic to see construction scaffolds in game. Same as with above, should be cheap to make, possibly even free handcrafted like totems.