1: Arguable. Though it is already a whopping 16 seconds at first rank, 12 max rank, with 35% + rank 5 is 7.8 seconds, and 45% + rank 5 is 6.6 seconds, which is very strong if people learn to actually max W immediately, which is the core strength of Lulu support. But then most people max E anyways, and the E max is the bigger problem. Though I won't be surprised if it got nerfed because even before any of the buffs or CDR changes, it has long been one of the most powerful non-ultimate spells, only to be gated by "short range".
2: This is a must, honestly. Right now people pretty much point and click E on people for free, and get away with it completely. Any Lulu doing that, ideally, should take risks or even be punished because she wasted a good shield spell for some dumb and super uninteractive point and click damage. Honestly, the mana costs are already high, but I would rather have its poke damage flat out gutted. Like, the LB new dash damage kind of gutted.
3: Arguable, though isn't an at all bad nerf to pull off.
Main point: Lulu players should be more focused on doing quick decision-making plays, and get rewarded for using and timing her spells properly, which isn't happening right now. All they mostly do is blindly poke, and blindly shield after lane, which is extremely uninteractive and thoughtless.