A question on the whitepaper.
Why does h - the average time a device needs to do the calculations necessary to issue a transaction depend on L - the total number of tips and N - the total number of transactions? That "total number of transactions" is it the total number of transactions incorporated in the DAG (probably unknown to the device) or what?
It's a general case analysis, a special case (for a particular implementation) may give average time not dependent on some or all these parameters.
You should have some considerations, why could h depend on L and N. Otherwise, for broader generality you should also consider dependence on Moon phase, which btw is easier to know for the device than L and N.