Should the customer-visible estimates include the load factor / velocity already ?
Usually it is easier to have engineering-time estimates, and multiply them with the velocity only at the end to get the necessary calendar time. If the relationship to the customer requires it (for example if the customer can’t understand a load factor of 3 or 4), it might make sense to include the load factor in the estimates. However, this will make reestimation more difficult, if just the load factor has changed.