The grenade was not nerfed, it was changed to fill a niche that was missing and to get rid of the major overlapping with the rocket. I have been playing with the new grenade for the last 2 days and I will list the pros and cons of the change as I see them:
Pros:
-the bounciness: there is now a weapon that can be used to hit people using base assets to hide, by banking the nades off walls, ceilings, and floors. You can now clear the chutes on nivo and moon without the nade exploding at the top, bank nades into the base of fallout, etc.
-the more severe arc: the grenade is now better suited for chasing as it can go over hills and kill cappers who are using terrain to prevent line of sight shots.
-faster projectile: like above, the grenade is now better suited for chasing.
-longer timer: when dueling you can now lay down a grenade under an opponent while they are falling, essentially setting a trap. the longer timer allows you to do this and switch to another weapon for an effect similar to hotswapping from back in the day. using a hand nade at the same time can provide 3 sources of splash damage in a shorter amount of time than was previously possible.
-faster reload: to offset the longer timer, the weapon now fires more rapidly, allowing a more sustained blanket of splash damage than previously possible.
Cons:
-minor damage nerf for MA shots. I understand this was done because you can still MA people at point blank range, and it is now actually easier to do with the faster projectile.
-more difficult to do point blank splash damage. I can't complain about this since there are plenty of other options for this (rocket or blaster or hand nades).
So why are people complaining again?
Because people just don't agree with you
The bounciness makes it less predictable and accurate than it previously was. This weapon is definitely more of a close combat weapon than one used for chasing. The use of the GL as a chaser weapon is very limited. When it comes to pass obstacles such as hills, unless you have a very bad chaser the chaser will usually be close from the opponent capper right? Therefore, the hill obstacle can be overcome by simply popping a hand nade over it.
As for placing a nade under your opponent... You could do that with the previous GL already. But apparently you didn't learn to use it properly. If aimed correctly you could already clean the chute and restricted environment with the old GL. So 4/5 of the "pros" you mentioned already existed. Good try though.
It is funny how a player who's known to play an offensive position and who just proved to have a poor knowledge of the GL tries to persuade everyone of how great the new GL is. How can you persuade when you can't properly compare the previous and current weapon? You just can't indeed that's my point.
I'm glad DeadGuy changed it and cloned the old GL into the actual GLII.
As long as the GLII stays as it is right now, that is with the characteristics of the old GL, I'm fine.
This way everybody is happy, you want to use a bouncy nade go ahead use it but you'll have better results with the old one.
You want to use the good old, more accurate and reliable GL? Then use the GLII