I assume you mean “what mods do I recommend out of the box”?

1. Klicky. I personally think tap adds too much mass and klicky is great
2. Magnetic panel clips to make it way easier/faster to get the panels on/off
3. An under bed filter with carbon. I’m using “the filter”. Even if you’re not going to print ASA/ABS the extra chamber heat helps eliminate warping on large PETG parts s
4. If you’re going to be going to be building a larger printer and print ASA/ABS skip to ACM panels. Also do #5
5. The fridge door is so much nicer than the stock double doors, but isn’t something you need to do out of the box
6. You’re probably going to run into wire breaks in the cable chains - especially the x and y chains. An umbilical makes that much more unlikely. You don’t have to have to USB or CAN to do this

… Off the top of my head, those are the big ones