Yes, I can confirm \Windows\System32\shellstyle.dll solved the Save as... isuue in Paint and in notepad++, and very possible in many other programs too.
Well, just to summarize, so far:
Installing Classic Shell just after first boot, the Start menu isuues are solved. It even has its own search feature, no need to use Cortana support for local search, which is good because our very appreciated SwiftSearch (that works at warp speed in NTFS) does not work in FAT-32 formated drives.
With the modded SySWoW.txt, LibreOfficePortable is working fine. EDIT: This file was re-uploaded it is fixed now.
And with a minor edition in System32-DLL.txt, notepad++ and Paint are working fine.
; \Windows\System32\SensApi.dll >>> Requided to run notepad++
;\Windows\System32\shellstyle.dll >>> Required for Save as...
Only remaining is the Wifi issue.
alacran