IPAM really needs a way to filter for values in each column.
Case in point: We manage several thousand subnets assigned to various entities. If I could filter the list on the fly so that only entries matching certain values appeared, it would make the task of answering a simple question like "which subnets are assigned to this entity?" answerable.
It's to the point where we're working on our own web interface to the IPAM database. A real PITA, and probably not worth it in the long run.
I'd prefer not to post details here but would be happy to discuss.