Thank you! I actually found exactly what I was looking for HERE and forgot to update my post. I'll add the link & your suggestion to the OP :)
Nope, it really does look like StarOffice did in the '90s!
LibreOffice has tried to make itself look a lot nicer. Doesn't use the ribbon, but otherwise they worked quite hard to make it nicer to use, put stuff in sensible places, etc. The press release calls 4.4 "the most beautiful LibreOffice ever", but that really means "not ugly." Which is fine, it's a tool for working with. Overview of the graphics changes.
Apache OpenOffice is basically not developed any more. LO has more code commits in a day than AOO has had this year.
For architectural work you might also want to look at FreeCAD.
On LibreOffice, there have been lots of improvements, e.g. better interoperability with other formats and huge clean-ups to the code. It would be worth you taking a look again.
https://www.openoffice.org/qa/ooQAReloaded/ooQA-ReportBugs.html
Looks like registration is currently manual. You could try emailing the address on the registration page or posting in the forum:
You would need to save your Impress presentation in PowerPoint format. There should be an option to do that when doing a Save As. Something like "PowerPoint 2007 XML" with a pptx extension.
You'd be better off using LibreOffice since OpenOffice is dead and barely supported at this point. LibreOffice is a successor to it and has about 7 years of bug fixes and improvements over OpenOffice, including a lot of compatibility fixes for MS Office formats.
Have you tried opening them in LibreOffice, a successor to OpenOffice.org? The developers have worked a lot on improved MS Office compatibility over the years, so grab it here (it's also free): https://www.libreoffice.org
Hold shift while resizing to maintain the aspect and angles.
If you are making complex drawing then you might find Inkscape more powerful. The svg files it produces can be imported into Libreoffice/OpenOffice.
PS: any reason why you have not upgraded to LibreOffice yet?
Sourceforge is the official download page fro OpenOffice, though it looks like you can also get it from the apache server https://archive.apache.org/dist/openoffice/
Is there any reason you have not switched to LibreOffice ( https://www.libreoffice.org/ )? Its the fork that most of the developers switched to about 5 years ago.