9.2.2 will install directly on a Beige G3 or newer.
Back in the day, the argument was that even on un-upgraded Macs, 9.2.2 contained performance and stability improvements. The authors of the utility also hosted, if I remember correctly, some very late patches to Final Cut Pro 3, DVD Studio Pro, and AppleShare IP 6.x. The authors were also specifically quite unhappy with Apple for keeping the last couple patches for AppleShare IP restricted to the education market.
I've never tried 9.2.x on a non-G3, I usually just use 9.1 on my pre-G3 Macs and that's "fine" for all purposes today. This utility is from around 2004 or 2005 or so when the last of the OS 9 users were still holding on for dear life.
I don't know if it's still on CK's server, but if you're interested in trying, this utility is on Macintosh Garden and as such will make its way onto VTools in time.