What is going on with all the missing US air to ground weapons

Why in the world is the US still stuck with Mavs and Jdams when we have Planes like the Grippen E using 16 spice 250s the F-18 E that came in the same patch gets, No agm 84, no agm 154, The F15E and F-16C are also missing a bunch of weapons.
and its not like these are somehow game breaking weapons these are all sub-sonic easy to intercept weapons so why are they not in the game yet.
Is it that the Devs cant be bothered to model these weapons or do they just care so little about the US Teck tree these days that even non OP equipment will get the time of day to be added.

At least we know something new is coming sooner rather than later with ARM.

Just hope the US gets something better than Shrike :P

we can only hope