Maybe part of the approach here could be to offer Hive as a sort of benefit to your existing patrons... instead of phrasing it as "a move" phrase it as a new "benefit" that offers patrons an opportunity to earn crypto as part of supporting you on Hive.
I see you have five different tiers on Patreon, so depending on which tier, someone coming over to Hive might get a Hive account loaded with anywhere (just shooting numbers randomly, here) from 50 to 1000 HP delegation for as long as they stay active.
You'd likely need a "How to Follow and Help us on Hive!" guidebook post either pinned or regularly recycled on your Patreon post feed... and it has to carve everything out in cardboard, almost like a Wiki of sorts.
I say that, not really having researched Patreon's policy on talking about off-Patreon venues...
I'm just brainstorming with you here, as someone who has noodled the same questions, both for my art, as well as for my wife's nonprofit.
This is an excellent idea. I think that this could be something that we could even use on our other social media channels and try to expand out even further. There are likely many Fans of ours who would like to support on Patreon, but the thought of monthly payment and investment has caused resistance.
What we're thinking is we will separate the content slightly so that the Patrons continue to get exclusive, "regular" behind the scenes content during the creation process of our new Story Album and Show. The remainder of the information related to the Story Album would be built here on Hive.
We could offer perks to people on Patreon - I LOVE the HP Delegation based on Tiers (we could also use a % of the funds we are receiving from Patreon to DCA into HP each month which would then be delegated back to new members). One could argue that becoming a member of the Patreon community could be seen as an investment if they were to then become active Community members on HIVE and earn rewards...