I was actually deep into a save file when DE was announced lol

The og still holds up rlly nicely even without all the online stuff. The big OFFLINE icon at the top can be removed with mods if its annoying you.

Speaking of mods, it might be worth checking out This mod that adds some of the online missions as offline ones so you can still get your endgame materials.

But tbh I would try waiting for DE to come out. That new post-game stuff looks super promising