I think the biggest concern is some of the easy ways griefers can destroy the town and the unreasonable solutions players come up with for them. For example a griefer hides a lot of tools in town so a player that means well chops down every tree thinking it will help keep them visible.
Unlike in ohol its a bit more dificult to find tools since they arnt outlined by mousing over them.
I think that one of the main reasons a lot of players choose solo even though they might not realise it is because of how other members of the family reacts to griefers.
They either ignore the griefer or they react in such a way that they end up causing more damage then the griefers themselves had.
While it seems possible to solo at first glance the problem is that babys could rekindle the solo town for example. So i dont think babies should be able to rekindle if they die before a certain age.
As for being reborn into a family i believe that its going to be a good system but heres some sugestions.
Being burried gives extra points instead of being a requirement. (An exeption would be if the player only has to be buried once in the family and subsequent lives do not have to be burried. Then it would be fine in my opinion to make it a requirament to rekindle but not be reborn)
Each banisment point makes you require more fp to be reborn and to rekindle unless the player was fully banished then they are lineage banned.
Banishment should be family lineage specific instead of server wide and perminant. For example lets say i make a Mandrake lineage. Someone gets cursed in generation 1 they dont play for a few days then gets cursed in generation 24 and rekindles the family in genration 30 or something then gets cursed again they should be perminantly lineage banned.
(There of course should be exeptions such as if the player who cursed the griefer gets lineage baned then all their banishments on other players become invalid)
Relates to 3. There should be a teir of banishment after being lineage banished that spans all servers. Perhaps after being lineage banished 3 times players are forced to only spawn as eves or rekindle or be reborn to their own family lines they have created. If they get lineage baned 3 more times then they can only have other banished players born to them. This cycle repeats until eventually they have to spend multiple lives as a lone eve unable to even rekindle until they spend enough time in alone in the wilderness.