Why CANT you back in Asc?

In ARAM is makes sense, it punishes your team for losing a trade. Otherwise the game will just last forever.

Being pacifist is also harder since you HAVE to push down the 1 lane, sure you can try, but once they catch on they can just dive your tower.

The issue with Asc seen in the pacifist games is that there is no way to get back to base whatsoever.

So i raise the question of why cant we back in Asc? As i said it makes sense for ARAM. And im pretty sure we can on other Crystal Scar modes. So why not Asc?

And in case there is some cheesy thing relating to The Ascended that im not thinking of (maybe making them too hard to kill?) Why not just not let The Ascended back? Disable their ability to back when they Ascend.

If not that make some form of neutral way to die so that if someone tries this you can get back to fountain that way.