There are over 10.5 million registered .org domain names according to pir.org's "history" page. At that scale, the 25K per year fees are negligible.   A 10% increase cap still allows for almost doubling the fee in seven years.  It seems odd to want to change that structure.  Did they justify this need -- I cannot find any documentation to that effect.

Absent incredibly good reasons for it's removal -- I feel that the cap should stand.