Wall jump block

I think it would be cool if there was a wall jump block in the game that would work like wall jumping in Super Mario games. If you could freely wall jump or have wall jump boots some might think it might be overpowered, but if there was a specific block for it, many could use it easily to make different sorts of parkour maps and hidden bases. So, if you jumped on to it and hold down the directional button to face the wall you could press the jump button and release the directional button to jump off it, but if you don't do it soon you would start to slide down it. It would be really exciting if this got added in to the game!