Leauge multiverse question

So if you follow most thing lol related you probably know that the league skinlines are now confirmed to be a multiverse but this gave me with the question of how it is structured and how safe is the KDA universe.

Let me explain

the kind multiverse riot games is going for will effect the way skin lore works just as much as ezreal e.g if it follows the model where there is no space between each universe and those who have the power can just pop ino any one they wnt at any time, then there is nothing stoping the praetorians or dark star from hopping over into kda or beemos universe which is a scary thought ( thresh stay away from my Evelynn ) or does it follow michio kaku's kinds of multiverse model where it works as in each universe have an kind of umbilical cord to another and it branches out that way with similar ones being close to each-other in which case good ol fiddle n graves and dark star may get blocked off if from going near kdas universe if the universes "in front" (saying that just for the sake of the quesiton i know there is no front back or down outside of space and time). of it are able to hold them back. or chase them off and and even better question is does it acknowledge the omiverse because lets face it it would be awesome if it did. Wouldn't you want to see the avengers face off against pre rework nunu or the dark star get their hands on the infity gauntlet or corp mundo put a cleaver into micky and put disney under knew mundoment (see what i did there?) or the ultimate cross over have teemo in overwatch and watch jeff and the overwatch fanbase lose thier minds.

let me know you thoughts on this weird neuron firing of mine below.