Would Riot ever create a PVE game mode?

In Warcraft III, there was a game called Warchasers. It was a top down, Warcraft styled dungeon, similar to WoW dungeons. There were about 10 premade heroes, and each player (4 of them) could pick one. It was long, (really long) and it was fun.

Would Riot ever consider creating something like that? I often want to resub to WoW just for the dungeon experience, but after playing LoL for so long, I realize that the top down gameplay is superior to 3rd person for control, and fewer impactful abilities are much better than 15 spells that you spam.

Diablo is quite different from this, as the playstyle doesn't change depending on how many people you have in your group. You still play like it's solo, with 3 other people lagging behind. Each monster dies in seconds, and it's all about AoE spam.

I have grown tired of the tedium of LoL PvP, but there aren't very many good multiplayer games anymore.