Your list is already very strict. As we have discussed yesterday, it might be desireable (until there is a better solution for multihoming) to explicitely permit prefixes up to a /48. This could be done "for your own region only", or "for all regions",
I am personally opposed to allow /48 PA prefixes in the routing table. This would become a de-facto the end of aggregation and lead us quickly to an un-manageable routing table again that would take huge efforts to clean. Although I have sometimes disagreed with Pim, the filters he posted are the responsible thing to do. We have reached this situation of people requesting 6bone pTLAs or subTLAs for the sole purpose of being multihomed because too many people have put their head in the sand for too long. Please don't encourage this anymore. /48s in the routing table are not a solution. There are two different IPv6 multihoming solutions currently discussed on the ipv6mh list that deal with geographic addresses (with a finer graining than a region) that could be aggregated. Michel.