Lulu discussion? I'm always down for that.
I think a lot of their decisions regarding Lulu weren't necessarily bad and the last nerf was 4.13 which was a few patches ago. I think removing utility scaling is a good thing but that's because I think utility scaling is a failure in general and should have never been implemented in the first place. I do however think the change they did to her E reveal going from 6 seconds to 4 seconds was a bad decision. I understand that her ability to double Q made laning against her problematic but removing that combo almost entirely was a bad decision. I think a better option would've been to increase the cooldown of Q by 2 seconds but keep the E reveal at 6 seconds. In other words remove the option to double Q at lower levels of CDR but keep it possible in the later game with higher levels of CDR. For comparison I'll do some math:
#Current
Q = 7 seconds
E reveal = 4 seconds
To double Q you need about half a second to aim Q's after you E so about 1 second total. So in order for that to happen you need to get your Q to a 3 second cooldown but you can only get it down to 4.2 seconds with 40% CDR which means the only possible way you can double Q is if you lead with Q, wait 1.5 seconds, E and then in the last .3 seconds of E you Q again and that is only possible at 40% CDR with extremely good reflexes.
#Proposed
Q = 9 seconds
E reveal = 6 seconds
Same prerequisites as above (1 second of aiming time). At 40% CDR you would have a 5.4 second cooldown on Q but with a 6 second reveal it means you can E - Q - Q with .3 seconds to aim each Q and if you Q - 1 second pause - E - Q then you would have 1.6 seconds to aim your second Q. You can also do a Q - pause - E - Q at about 20% CDR but higher levels of CDR give you more breathing room to aim the 2nd Q.
Now this is just my opinion on what should've happened instead but it is debatable and I would love to have that discussion but I personally love the double Q combo, so when it was practically removed I was a little sad inside. Now as it stands what does Lulu need compensation in? I think her base mana regen needs to be buffed to start and I also think having her E snap to targets after they use a blink would be a nice little buff because currently if they blink or move really fast it takes a decent amount of time before pix catches up to them especially if they go over terrain since pix paths around.
I've also heard a lot of great suggestions on how to rework her E but since there isn't any real plans on reworking Lulu even just for one ability I think that discussion could be held for another time.
EDIT:
Another alternative could be to have her E reveal scale with levels for example: 4/4.5/5/5.5/6
This means she would need levels in E to double Q but it would be a rather weak Q so it really wouldn't be that effective until you have levels of Q and E.