Thanks for feedback! Always appreciate comparison to Nifflas, Knytt Stories was a big inspiration ^^
It's good to know about your frustrations, too. I admit, changing the platforming dynamics sounds a bit daunting this late to development, as it could have many ripple effects to level design. One thing I could consider, however, is to add a "game speed" option, where you could make everything a bit slower to fit your tastes.
Now only to, uh, try implementing it.... :D