This is why you're not a game designer.
Originally posted by another user
add something else for hardline pro, maybe like 50% longer helicopters, dogs, etc.
So what you're saying is that now since you can't change your SAM turret, any kill streak you get will not only be one kill earlier, but it will also have an additional 50% added to the time length. That would be so unbalanced. you'd get dogs at 10 kills and they would last not one minute, but 1m 25 seconds. Most people that use hardline don't do the 3 care package glitch thing anyways.