Im not sure if this is pointed out yet, since I am honestly scared to look through 68 pages of comments, but I was looking through your Varus remake and here are some of my thoughts.
I feel like this is not what Varus is supposed to be like. In his lore, he is represented as a tragic hero, who has to choose his own destiny, either save his people, or defend the Corruption. It is in his choice to defend his post that he loses all that he loves, and then decides to merge his body with the evil that he was trying to protect from the world in order to take revenge for his people. Thus, he is dubbed, "The Arrow of Retribution". I feel like his kit should be more vicious, rather than "beautiful", for example:
Passive: What ever you want to call it, I'll call it "Corrupted Trace"
Each time Varus attacks an enemy (be it minion, monster, or champion) they will gain a stack of Corrupted Trace which will give Varus bonus armor penetration on the target. There should be 3 stacks, with 10% armor reduction with each hit. If Varus uses an ability on the target, then the ability will consume the stacks and deal bonus damage (20% bonus damage per stack). Stacks can be put on multiple targets at once, and they decay over a period of 5 seconds.
Q: Piercing Arrow: Unchanged, he will charge up his arrow and it will deal damage with respective range based on how long he charges his arrow.
W: Arrow Rain: Varus launches his corrupted arrows into the air over a target area (maybe 100-150 radius circle?) and targets in that area take X damage 3 times. Only after 3 hits do the stacks of Corrupted Trace disappear, since this should be calculated as a "burst skill", but logically, launching several arrows into the air will cause them to fall at different times. Targets hit by Arrow rain will be slowed for 3 seconds, with the slow increasing from 10%-30% based on how many times the target was hit. Damage will scale, enough so that by level 9, you will have a very fast wave clear (kills caster minion line), slow will not. Primarily, this will be more for the CC, so it would be ideal to see it either leveled early and maxed last. Also, the cd for this should be maybe 8 seconds flat, levels 1-5?
E: Burning Vengeance : Temporarily increases Varus' attack speed by 20/30/40/50/60% for 8 seconds, while also increasing his movement speed by 6/7/8/9/10% for the same duration. While Burning Vengeance is active, Varus is also less susceptible to CC, increasing his tenacity by 10/12.5/15/17.5/20% for 8 seconds. --The point of this skill is to give him that sense of "My people were slain by your hands, let my rage engulf you", in a sense, filling his body with rage and passion for revenge.
R: Chain of Corruption: Varus uses the corruption from within himself in order to launch an arrow so terrible that it snares the first champion it hits (same range as current ulti). Snare lasts for 3 seconds and all near by enemy champions are feared from the champion that was hit (giving it that sense of, oh god, what happened to you??) fear lasts for 1 second.
All in all, this kit that I thought up is just to give him a more lorebound set of skills, that utilizes his corruption that he is so known for. Feel free to disregard and change up what ever, but ideally, I just want to make the point that Varus is NOT an acrobat. If anything, he's balls deep in the fray.
TL;DR Varus is not an acrobat.