One aspect of the original idea I proposed was that this should be something a lowly knight should be able to initiate on his own. Just about every knight and noble enjoyed hunting and were capable of organizing and engaging in a hunt. I would prefer to avoid having hunts becoming as expensive, time consuming and restrictive as tournaments.
All that being said, multiple nobles being able to join a hunt is just plain awesome and I would prefer that over single pc-noble hunts.
Perhaps it can go like this:
1. Any noble holding an estate, region, duchy or nation can announce a hunt.
2. A noble can only announce a hunt in a region his domain.
a. a knight can only announce a hunt in the region his estate is in - his estate is his domain but mechanically it ends up being the region.
b. a lord can only announce a hunt in his region - his region is his domain
c. a duke can announce a hunt in any region within his duchy - his duchy is his domain
d. a leader can announce a hunt in any region in his nation - the nation is his domain
3. When a noble announces a hunt he selects the game of choice, the type of hunt, additions to bring (dogs, falcons, ect...) and nobles to invite.
a. the noble can invite any nobles within his domain when the hunt is started.
b. once announced the hunt will begin in 2 turns
4. Invited nobles receive the invitation and either accept, deny it or ignore it.
a. ignore acts like deny but the response message is something like "Sir X never responded" instead "Sir X declined to join the hunt"
b. when accepting, the noble can chose a weapon, bring dogs, falcons, horses, and all that as they are able and the hunt allows.
5. when the time of the hunt arrives, all nobles that chose to partake in the hunt go hunting.
a. the hunt lasts one turn
b. only nobles who joined the hunt and who are in the hunt domain participate.
c. region type affects how likely a given hunt is to succeed.
d. if the hunt organizer is outside the hunt domain but other joined nobles are present, they hunt without the organizer
e. if no one accepts the hunt, the hunt organizer hunts on their own.
6. estate additions (kennels, mews, stables, etc...) allow knights to bring extras to a hunt or plain participate in certain hunts
a. kennels allow dogs and dogs aid every hunt type.
b. stables allow hunting horses and help every hunt type.
c. mews allow falcons and allow one to join hunts with falcons.