Now that's a completely solid idea. The monitor I've got is huge and I suppose I could get the Ultra 2 up to some rather nice spec. Now if only all my mice weren't the type that needs the special metal mousepad to work...
To think of it, I could finally put my RPi to good use by running the browser over X11 forwarding on that.
I did install Solaris 7. It has some interesting quirks I had forgotten about, such as no system-provided entropy. Overall, it's rather snappy and nice to use. The Ultra 2 display adapter is a double-buffered 24 bit thing, which is reasonably performant. I actually used the HotJava browser to fetch packages for the system.
The first commercial Unix system where I had root was an Ultra 1 running Solaris 2.5.1 at my first job, early 1998. We upgraded that system to 2.6 later, and my first own server was an IPC running Solaris 7. I haven't touched Solaris of this era since then, but the commands and file locations came back to me as I configured the system. Slightly weird, albeit nice, feeling.
Also, sunfreeware.com had turned into a subscription-based paid service, but there's a gentleman out there providing readily-built binary packages for Solaris 7.