DiO, be sure to check out Far Cry Arcade that comes with the game... you can create your own maps and missions, for either PvE or PvP, using not only assets from Far Cry 5, but from the previous editions and other Ubisoft properties like Assassins Creed and Watch Dogs... looks awesome for someone with a bit of creative talent. See the info video below...
Other reasons for getting this for me are:
Single player co-op mode - you can play the whole game in co-op
Large map with a large number of weapons, allies, animals for hire and vehicles
The setting and killing rednecks
Fast travel lets you skydive to the point where you want to end up, rather than a set place, usually occupied by a shit-ton of enemies
Mad-ass DLC that has little relation to the original game - there will be 3 apparently, a Vietnam war story, battling invaders from Mars and of course, zombies...,
No more climbing towers - this has been replaced with meeting people at certain locations who give you information.
I can't wait...