Just got the 2.4 update and GPS fix is a lot quicker. Still nowhere near as fast as my nexus 7 2012 but. Its much better than before.

My mem card works fine

I've noted a couple users above report that SD card use works, but I'm questioning that on stock OTA update 2.4.  I had a 64 gb card formatted fat32 that worked great through Android 4.3.  I got excited when this update said it fixed SD card issues.  No matter what I did - and I tried reformatting the card a few times - I couldn't properly write or transfer apps to the SD card.  After downloading big games, I'd try transferring them to the SD card, and while it appeared successful - clicking the game reported that it was not actually installed.  I tried this with Asphalt 8 and Nova 3 specifically.
 
After several days of trying this, I gave up - and decided to root the tablet.  It's gotten next to no use ever since the 4.4 update.  I used the supertool from the XDA forums, and once again the memory card is working as I expected.  I realize I've voided my warranty, but it's worth it to actually use the tablet as advertized.
 
With the latest official update, I really could only use the memory card to read media from.  With the root and SD card fix from the supertool, everything seems to be working flawlessly after a couple days.

Yes, and you've listed exactly everything that you *can* do with it... it's changing or deleting files on the SD card or adding files to it that won't work outside of moving the app to SD, which will still sorta work. USB drives have the same issue as well. This is because of Android 4.4, not our tablets... Google for some reason decided to change this behavior in KitKat. Please do a little research before you go spouting off that it's user error... this is a widely known issue that affects the entire Android ecosystem.