The other thing I enjoy is the daily login bonuses. My favorite new thing they added you can see implemented near the tail end of Metal Gear Scanlon, where they basically added little challenges like "Fulton 100 people" or "Finish Mission 6 with an A ranking" and then they give you some money, or some resources, or 5 trucks, or a few S rank soldiers, its all over the place what you get, but its certainly useful.
I started a new game on PC in July, and have been slowly chipping away at it since, and I do like some of the additions they've made. I think you're fine to play with the most recent updates. People had legit issues with the servers going down and how that impacted their economy and whatnot, but I highly doubt you will experience these issues today. Thankfully one of those involves being a stable videogame, so you don't need anything patched to fix the framerate or even any open world mess. Overall I don't think this is a big deal. The biggest concern based on watching some of Drew and Dan play through MGSV is the end missions pop-ups seem to have increased a lot. You are going to get more reminders about buying coins (which you never need to do), insurance (which you don't need), and multiplayer (which you don't need to engage with). I imagine the servers are incredibly stable by now, by virtue of there not being a ton of people playing this game compared to September/October 2015. If you go in the red, some negative things could happen, like your squad starts leaving and stuff like that.
They added a bunch of stuff, arguably for the worst, when it comes to the currency in the game, which you need to build more platforms, buy equipment, upgrade weapons/tools, etc.