I'll pass on as far as I've gotten, which isnt far.
Ours is a bit of a hike, mid step off to side, as much awkward as hard.

Having exposed some wood paneling when removing carpet that was on wall over window I started seeing a ladder again..
Made some sketches but haven't pursued. I'd like it to go to floor but the water tank box/step would push it out too far. So it'll be from top of box up, that'll give it a slighter slope and 2 rungs.
Adding some form of hand hold.
Second is want/need it easily removable (mostly due to slide & tank access, the small drawer, oh and the converter-details). Nice if it would swing over to side but looking at just hanging into brackets that I can lift ladder off of. I 'think' it'll layout where we'll have good width steps and still use the top of tanks for first/last step.
Hurdle that's holding till warmer weather though is attachment. Just haven't given it much follow up.

Not far, but a direction if/when I get motivated.