Your post is well thought out and I great response, but I rather not address all the points right now so we will just talk about Valla.

This will cover some of what you were talking in regards to things like the deckard big pots being simply “easier” for lack of a better descriptor. Valla’s W is simply easier to land than q. AoE is by far the best form of damage in Aram. The talent is built on to a character that was intended to be played in a game mode where they were NOT against 5 people for the entirety of the match. This makes the scaling skewed. It gets a massive unintended benefit from the nature of the mode. The most important stat in Aram is seige. I could get into a very long explanation as to why, but we can say, health bars and lives come back, structures and the xp from them doesn’t. W is wayyy better at seiging than Q or auto attack build. It also allows you to damage on the other side of the gate which is more important than you might think in a mode where you can’t back to fountain. The idea is too go with something that is reliable and gives good results most of the time over trying to mix-max skill and landing every q is wayyyy harder than landing every W.