Hard to tell at this point but most likely, FFXV's world will be bigger by the end of it considering SE's experience and budget! But either ways, I am really excited for X none the less! It looks like its going to be full of life and things to do!!!
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850