A consistent theme in vampire lore is that they can not enter a church, as it is holy ground. I would propose that vampires take damage when they are within 16 blocks of an altar of light (slowly so as not to kill them, but to encourage them to move through quickly, maybe like underwater with respiration). Strategic placement of altars of light could then be used to discourage vampires from hanging out in specific areas. It would also encourage defenders to fall back to the church when attacked by vampires instead of just hiding. This would also allow the creation of factions that were very vampire unfriendly (read - we have consecrated all the ground this faction has claimed).
In thinking about Regalia, and how close everything is, I would add that a dark alter should cancel this effect within a similar distance, so that having a dark alter would protect a vampire that is hiding, but it would also be possibly incriminating evidence if it were found.
Looked up respiration and would propose ~15 sec time with no damage, then 1 heart damage every 4 sec. This would discourage vampires camping out near an altar of light, but would still allow raids, with vamps needing to use their speed to leave the area every 15 sec. They, of course, could build an altar of darkness on the border for protection, or at their base to counter the use of altars of light as a siege tactic (although raids to break altars in wilderness would also be effective).
In thinking about Regalia, and how close everything is, I would add that a dark alter should cancel this effect within a similar distance, so that having a dark alter would protect a vampire that is hiding, but it would also be possibly incriminating evidence if it were found.
Looked up respiration and would propose ~15 sec time with no damage, then 1 heart damage every 4 sec. This would discourage vampires camping out near an altar of light, but would still allow raids, with vamps needing to use their speed to leave the area every 15 sec. They, of course, could build an altar of darkness on the border for protection, or at their base to counter the use of altars of light as a siege tactic (although raids to break altars in wilderness would also be effective).
