I'd vote for making the wall jump easier.
I think we developers have an easy pitfall that we are way too good at our own game because we created it, playtested it thousands of times and know what the game wants from us. To make it accessible for others it needs to be made much simpler than you'd expect from your own experience as the dev of the game. I'd say that, especially for game jams where you want people to get to experience the whole game, it is better to release the game being a bit too easy than a bit too hard.
(Similarly, I'd vote for over-explaining the game instead of under-explaining.)