It is already a possibility in the RIPE region to do such transfers.
It is really to cover a corner case where organisations are not able
or interested in receiving the IP space in form of assignments or
sub-allocations, but need them to be part of their own registry for
full control of the space and only for a pre-set amount of time.
I do not believe that spammer would benefit from this policy as they
would have to register with APNIC as members and provide all the
needed paperwork such as company registration papers, ID/passports,
billing address etc...
They are much better off renting a /24 from the black market with no
traces or documented changes ion the address block.