Do we need 10 or 16 or 24?
Remember this is not a target rich environment. If all 8 deployed aircraft were launched at the same time you would be putting far more systems over the AOR than there are targets. Remember also the Tornado would not be the only British asset hunting camels.
What is needed is a small number of weapons system in the target area 24 hours per day including Fridays; a return to the expensive cab rank system. To maintain one aircraft on call probably needs 3-4 back at MOB.
GW 1 was a short period of intensive operations where much scheduled servicing was deferred. Similarly ship returning after FI needed a lot of maintenance. Similarly the RN had to recover ship from the reserve for sustained operations in the last Cod War, more than one sustained "battle damage".