Determining whether to use XCP for gas, or an XCPC stake token that is periodically awarded to XCP holders by the protocol, based on their XCP holdings.
If XCP is used, a solution to control the rate of deflation will need to be found, as unlike Ether, no additional XCP will be created. That, or XCP consumed could be frozen for some period of time, imposing an opportunity cost.
If XCPC is used, the rate of generation and caps on the max number of XCPC in existence at any one time will need to be discussed and established.
--- XCPC token would be rather weird - yet another token, periodically freely airdropped to XCP owners, essentially at no cost.
To execute a smart contract you can
1. buy some XCP,
2. get free gas (XCPC),
3. use the gas and sell your XCP.
--- Freezing instead of burning? This doesn't solve the problem. If many people freeze their XCP, it leads to the same distortion. The rate of freezing would have to be decreasing.
--- Decrease the rate of deflation - maybe the best option?