I'd be happy with a lot of the different options presented so far, but if I were to design it myself I think I'd make the least dragonmark grant an appropriate daily utility power, as well as the ability to take special rituals that only bearers of that dragonmark can use.
I haven't seen information anywhere on how rituals are used, but I think proprietary, out-of-combat utility magic best fits the flavor of the Great Houses and their respective monopolies, and I think that means rituals. I would keep the dragonmark-linked magic items for the same reason.
So, basically, in an emergency a Jorasco Healer or Vadalis Handler could cast Cure Light Wounds or Calm Animals (or the 4e equivalent, of course) respectively, but what they do with their mark most of the time is slow, out-of-combat activity that's more fitting with being in business. Dragonmarked adventurers would still benefit from the daily power, and the rituals might come in handy, but neither one would overwhelm their class powers or other feats.
This is largely based on guesses, though. There are still a lot of rules I need to see before I even know if this is a good suggestion. Sigh.
I haven't seen information anywhere on how rituals are used, but I think proprietary, out-of-combat utility magic best fits the flavor of the Great Houses and their respective monopolies, and I think that means rituals. I would keep the dragonmark-linked magic items for the same reason.
So, basically, in an emergency a Jorasco Healer or Vadalis Handler could cast Cure Light Wounds or Calm Animals (or the 4e equivalent, of course) respectively, but what they do with their mark most of the time is slow, out-of-combat activity that's more fitting with being in business. Dragonmarked adventurers would still benefit from the daily power, and the rituals might come in handy, but neither one would overwhelm their class powers or other feats.
This is largely based on guesses, though. There are still a lot of rules I need to see before I even know if this is a good suggestion. Sigh.