UPDATE There are now answers:

• Remove variable gas price
• Fix gas price to 0.0000004 (so that a 21,000 gas price transaction costs about k$0.0084, or just less than a penny).

• In Ethereum the cost of operations are not measured in the token directly due market prices - change rapidly. From a marketing point of view we can use our own stable token to address and give "human" prices instead of using terms such as gas and gas limit. In volatile networks it's important to separate the price of computation from the price of the token. In our case it's not since we have a stable coin.

• The other part to the gas issue is to identify whats an acceptable "gas limit" for 1 second block times. Ethereum has a dynamic gas limit but in our case we're interested in the maximum amount of transactions in that block of time.
  A dynamic one might make sense in some scenarios.