Grapple with anchor points

With the caves and cliffs update and new underground terrain, the insanely huge caves and mountains are becoming almost impossible to explore for casual players like myself who cant afford ender pearls or do the water bucket trick (plus water buckets are lame). Having a grapple to help me safely explore caves and scale mountains without constantly falling to my death would motivate me more to explore underground acting as a safety by planting anchor points to the ground or ceiling and attaching the grapple similar to a lead but it doesn't break at distance. Once anchor point is down, you can rapell down cliffs, pull yourself up a mountain side, swing accros ravines, manoeuvre around skulk shreikers undetected etc. It would also open up some interesting building ideas such as base entrences and redstone contraptions. Plus it's cool.