There are a few things that I really recommend you do with your ender. Some are printed, some are not. Let’s start with the printed.
Cable chains for your hot end and your heated bed. This is more of an aesthetic thing but it also keeps your cables from snagging. I would also recommend v-slot covers to prevent dust and random bits of filament from getting into the extrusions.
A filament guide. The path the filament takes from the top of the printer to the extruder is a pretty sharp turn so this would be one of the first things I would print.
A tool holder. The v2 comes with a little box to put things in, but I prefer to have my tools more easily accessible.
Non printable upgrades:
First and foremost, klipperize that sucker. You’ll lose the use of the lcd panel, but the amount of speed, control, and overall ease of use you gain from using klipper and fluidd or mainsail is so worth it. I would also recommend upgrading the main board to an skr mini e3 v3. It takes some effort to load the firmware on it, but it individually controls each fan (so that annoying hot end fan actually shuts off below a certain temperature instead of running all the time). It also has a ton of room to expand the functionality of your printer.
After that it’s up to your personal preference. I added a neopixel strip to my top bar that is controlled by the skr mini and klipper. A pi cam for giggles and remote monitoring. I also upgraded to the sprite DD extruder so I can print flexible filament. If you don’t go the DD route, definitely get Capricorn tubes and get rid of that stock Bowden tube. Definitely get better compression fittings as the stock fittings suck. I would also upgrade to an all metal extruder and a steel extruder gear. I personally love the flex steel pei sheet from biqu as I had a lot of problems with the glass bed that came with the printer.
If you have any questions, feel free to message me. I have hundreds of hours of tweaking time with this printer.