Inf ammo is good (bolts and arrows only) because it stresses the use of bows/crossbows and takes paladins back to their roots. Of course this is weaker than assassin stars, so for maximum power gaming and for the best pvp resultes, players will use the limited assassin stars. Also paladins still need potions so it isn't like this makes their hunts unlimited it just makes them a little more like knights (supply wise) and keep in mind that bolts/arrows are weaker than high level knight's weapons. Also it makes them a little less like knights in hunting style (they will have to keep distance to lengthen hunts as they will be fighting without a shield).
As far as unlimited runes/potions go, I believe they are a terrible idea. Not just because they have people hunting forever (this usually means 24/7 afk botters on your server), but because it destroys any kind of economy you might have.
Unlimited supplies = unlimited money so everything becomes worthless. For this reason, unlimited supplies have no place on any decent rpg server. For a fun or war server they aren't always a bad idea though.