With the current size 2MB / 2,5 min it could grow 1GB per day allowing up to 56 transactions per second.
https://www.dashcentral.org/p/2mb-blocksize
Better start and find a solution now before things will break, and it will soon
I understand the essence, but Nakamoto f***ed the thing up with his 4.2MB per year.
This is the essence of the problem, and it's not going to take off with this.
We now get a lot of different coins in stead of a large one