It would be great if proper reloading animations could be implemented. Otherwise players very often get the wrong impression how long it takes to reload a weapon or launcher in combat/under fire.
Some reloading times for AI + players that need a few changes are imho:
all heavy machineguns + heavy sniper rifles - add 2-3 seconds to reload the magazine
AA manpads and heavy AT's aswell as the static AA/AT - add 4-6 second to reload the missile
medium AT's (eg MAAWS) - add 2-3 second reloading delay
Maybe a userfriendly config tool could help here to find the "best" compromise for most players?