-No "aging" of resources for category calculation. I've never understood what makes a prefix allocated in 1999 different from one allocated in 2009 anyway. For IPv6 that would be farcical anyway.
this benefits early adopters, no doubt. maybe most of people driving policies are early adopters -- it wouldn't be a surprise for me. but between 1999 and 2009 there is a difference of 10 years' fees. maybe this is a "bonus discount" for having paid previous fees and keep using the space? maybe someone on the list could explain what was the original rationale/argument for this...
One argument could be that this is essentially charging for work the RIPE NCC has to do. Right after an address block is allocated, there will be more work dealing with out-of-window assignment requests, but when most of the address space has been assigned, that activity dies down. Regards, - Håvard