Just got access to the ascending height so i don't know if it exist and is locked behind my progression.
I think an endless mode for the ascending height could be nice.
This is how i see it :
Every 2000 meter the game considered you win a full game, and you have the same probability as normal to get a chest but you wont get shards.
The chest you could get would be on a platform, as such it will be a challenge to get it.
But :
You can play endlessly, and if you are skilled enough, you could get multiple chests, and even more shard than you get normally.
If you are not skilled enough you would get less then normally.
Would be nice from a gamplay perspective and would allow me to get more than 2k on the ascending height stats and could introduce more achievement.
Just saw that there is no ascending height tag for the ticket so i will mark it as Special event.