ximbietc The new system monitor package name is plasma-systemmonitor.
Thank you! I created a .desktop file for it, made it executable, and placed in my ~/Desktop folder. Although I don't like a lot of icons on my desktop, I haven't learned to edit the menu yet. (Haven't had any reason to yet.) I figured this is a good first step.
EDIT: Heh ... having just written that, I looked in the menu and realized that installing plasma-systemmonitor with eopkg has already gotten it into the menu! Oh, well, I'll have another reason to learn the menu thing another time.