Fast nades are actually somewhat useful, as an early suprise nade can actually wipe several squads if used right (PGs love to clump). This is a game winning move.
Yup, pineapples are insanely OP vs PGs and falls.
No but PGs and Falls are balanced with low health, keeping their 40% damage reduction vs small arms in mind. So when something that ignores their armour hits them, such as flames or nades, it simply WTFPWNS their low health.
Why do you click shift
Holding the shiftkey down queues orders