Keep in mind that anyone in their right mind these days will probably want to be finding a flickerfixer for that slot; the leftmost ISA cover would probably be the best idea, but also the most annoying in terms of wiring lengths.
If you had a graveyard's worth of 2000 parts, a thin slide switch dremelled into the front LED assembly could potentially come out looking nice, but unless you had a spare 'original' to send along, best to keep such things unmutilated, indeed.
---
One thing I like to do when working on any 'rare' equipment is to fold up copies of any useful documentation (jumper diagrams that required 6 hours of searching, etc) in a ziploc bag, and tape it securely to the inside lid of the casing, or somewhere out of the way in the drive cage. (Not many good spots in a 2000, but maybe an unventilated side of the PS?) While maintaining a horde of flaky Windows boxes, I used to hide boot floppies with appropriate ATAPI/ASPI drivers in that manner, quite handy for Worst Case Scenarios. If you're transferring your Workbench license(s), might be a nice idea to tuck an extra set of install/recovery disks in there, if you can find room and avoid the risk of shorting anything out. (What the ol' Ziploc is for; I used to use a box of Maxell floppies with plastic doors- and thus less risk- but I don't think they ever made those in double-density.)