I fully agree with the 'long term' aspect of it. There are plenty of more useful short term mods on the way though, many of which can be utilized later on.

The earlier mods that I'd recommend in order are:

• eB fan shroud (uses two slightly longer M3 screws)
• bed stabilizer struts
• Firmware upgrade (or Klipper if you're adventurous and want top print quality)
• BMG dual-gear clone extruder (example link, check reviews to find a good one)
• All-metal heat-break (only required with higher temp filaments)

You may also want to consider adding a BLTouch or 3DTouch ($12 Chinese clone from aliexpress), when you're ready to do firmware upgrading (required to use one). You can also build a just the Voron "Afterburner" and direct drive clockwork out of the guts from a BMG and slap it on your gantry. There are also lots of alternative options for direct drive conversion as well, if you don't intend to go the Merc1 route later.