I wouldn't charge too much for teleport. If the fee is high then so few people will use it that it might as well not exist. I can go for charging 1 btcd for max security setting but if the coin reaches 10 dollars or more then sending just a simple transfer would be pricey at 1 btcd per low setting teleport.
it wont be a fee, just a requirement to have it, you can and should be staking with it
the fee will be something small like 0.1%
Oh well in that case I don't see a problem with that. It will make Teleport the high class way to send coins. Only for the people that want to transfer large amounts of money with the best security around.