QoL Buffs for Lux, please

Lux might have her mana situation somewhat stabilized with Grail now being good again, but there are three things in her kit that are rather annoying and could be given the QoL touch.

1. Lux only gets her shield's first application at the end of Prismatic Barrier's casting animation. This is a considerable delay that can often get her killed. Other mage/supports like Janna, Karma, Lulu, etc., can get their shield instantly without needing to wait for the end of a cast animation, but Lux is left with that clunky wait. The fact that it can shield multiple allies is irrelevant; that first shield application on herself should be more responsive. She should get the first application of the shield at the start of the casting animation, not the ending.

2. Lux's E has a short period after arriving at its destination where you can't detonate it. Instead, you have to wait for about 0.1-0.2 seconds before you can trigger it. Whether that's due to ping or a built-in limiter, it's freaking aggravating when that delay causes you to miss a kill. Additionally, unlike Gragas' Barrel Roll, Lux cannot "pre-detonate" her Lucent Singularity. Essentially, if you tap Q as Gragas right before his barrel arrives at its destination, it'll detonate the instant it gets there. Lux, on the other hand, can't do that. VERY ANNOYING.

3. This one's been said before, but Lux needs both a new skin and a texture rebalance. Visuals are important too, Riot!