Perhaps there may yet remain those that are familiar with the other Layout Editor (the version I have is 2016.11.29) It is a stand-alone program of ~150kb in size and looks like below. Where was/is this obtained from? These last two years have, amongst other things, dulled my memory.
perhaps this thread is the one you're looking for? https://forums.daybreakgames.com/eq2/index.php?threads/layout-editor-download-version-1-7-2-14.20/ Though that appears to be the same version as you already have. It includes a link to the EQ2designers website where the editor download is hosted.
Or is it Sennen's LE? https://forums.daybreakgames.com/eq2/index.php?threads/open-source-layout-editor.568770/ There's a link to the .exe in the second post.
Yeah, that looks like Sennen's to me, except in mine, the second circle is filled with blue. Uwk who uses Sennen's like, 99.9% of the time, because with it, I can go seamlessly from the open house that I'm working in, save the layout, and go straight to the layout editor (which asks politely, "I see that you've updated the file; would you like me to reflect that in my display?" or some such thing) without having to muck about with all the WITH, WITHOUT, WORKING, INSIDE, OUTSIDE, UPSIDE-DOWN, INSIDE-OUT, WRONG-SIDE-INSIDE-OUT, E-I-E-I-O, etc. separate files...granted, Sennen's loses a tiny bit of accuracy each time, but it's more like 89.9875000 degrees vs. 89.98749995 degrees, for example (JesDyr's does rock for things like Copy/Paste Location Information, moving Groups, and scooching things along the NW/SE and NE/SW axis)