I'm not saying its trivial. But I really don't think such tests are going to be significantly constricting. Once the weapons testing is done on a single hard-point surely you don't need to go through the whole process 4 times. Surely dual weapon carriage will be in the interest of the USAF/USN/USMC if such tests have already been conducted on the F-22A & the system is already used on the Hornet family.
Testing for one hard point is not the same as testing for others - and definitely not for different platforms. There is no relationship between certification of the platform with "x" hard points - and certainly not between platforms.
each pair of hard points has to be tested because it impacts on handling profile, on centre of gravity issues, stall issues, thrust and PW issues, landing and takeoff impact, and can impact on basics such as doctrine. On a carrier it's even more significant due to trap measurement issues for the wires.
a fully loaded fixed wing combat jet with multiple hand points will start to handle like truck. it changes things considerably.
why do you think it took so long to certify different weapons on the Hornets and F-111's?
it impacts upon not just the rails, but the harness, the weapons software, combat system, load bearing surfaces (multiple ejectors cause significant stress - so the platform has to not only be able to support multiple weapons, but its got to be in a structurally sympathetic part of the wing, and that could mean an impact on existing harness routes, fuel lines etc....)
each weapons release has to go through a designated of cycles to be certified. It's not like testing a hard drive. It's a physical test, mounting and dismounting.
missiles also have to go through the mount/dismount test - and thats why after a certain number of dismounts they can no longer be used.
there is an enormous amount of work in testing for weapons carriage and platform certification
and there definitely is NO relationship between mount/dismount and certification tests for the F-22 and the JSF except that they both have to meet baseline acceptance conditions.