Kind 30002 could potentially work.
1. How to specify that these are relay view lists (for example that could be displayed with other lists like those of kind 30000) and not some other type of arbitrary relay list (not sure what else is using or will use this kind).
2. How to include params? In the relay URL, as another tag, encrypted with a shared key with the relay (for privacy)?
Perhaps nostr:nprofile1qqswuyd9ml6qcxd92h6pleptfrcqucvvjy39vg4wx7mv9wm8kakyujgpypmhxue69uhkx6r0wf6hxtndd94k2erfd3nk2u3wvdhk6w35xs6z7qgwwaehxw309ahx7uewd3hkctcpypmhxue69uhkummnw3ezuetfde6kuer6wasku7nfvuh8xurpvdjj7a0nq40 may have some ideas.