I have the Phanteks Enthoo Pro as well, very good case.
A few tips:
1. USB-C can be added, there is enough space in front panel. You only need a long enough cable, a drill to make required holes, scalpel to adjust the shape of the hole and a way to secure the port in that hole - I used double-sided tape. The panel itself is made from plastic. Even USB 3.0 ports are replacable - it´s just internal USB 3.0 cable with 2 female ports, held at the front panel with 1 screw.
2. bottom filters can be merged together with ordinary electrical tape and taken out from the front. No need to take rear filter from the back, as they are both in the same slide.
3. if you want to silence your case, this one fits exactly on both side panels:
https://www.amazon.de/-/en/Akasa-AK-PAX-2-Paxmate-PLUS-full/dp/B000OGX548 - take care tho, once you put it there, it will be almost impossible to remove.
Such great case for improvised upgrades and solutions. Mine is currently 6 years old and still good. Very good quality of both front and top plastic panels - I lost count of how many times I removed them and put back, they still hold firmly together. A little (but evident) downside is the top mesh, which is filtered. While it can be removed, it holds together via small metal pliers and those cannot survive more than few disassemblies before the metal wears out.
Another downside is the size - that thing is massive, but the internal layout disallows using wider/longer GPUs, the metal plate on front stands in the way of cabling.
My own case has another downside - I don´t know, how I managed it, but rear area around PCIE slots is bent. When mounting GPU or anything else into slots, I have to hard push the rear of the case into holes on GPU. This is worsing over time - possible cost-cutting feature, or worn rivets, as that´s the only area in the case, that is riveted - which brings me to another upside point - most of the case is being held together by SCREWS. Most of the case can be disassembled and changed into any shape needed.
Another small con - all thumbscrews don´t hold well in magnetic screwdriver. Front plastic frame has holes on the side and front, making front filter a bit less effective.
Do you remember the plastic bags, you get with most cases, that contain all screws and accessories? With this one, you´ll get small plastic organizing box.
I know, my comment is a bit of a mess, but I hope you´ll get all main points.