75% - Why?
You only give this tablet 75% but I can't see any justification for that. There are some minor design decision cock-ups but not 25% worth. We all have our preferences but, when compared to the iPad WiFi version... what is there that bugs you so much that you can't customise to your liking? And knocks 25% off the marks?
"Do remember, though, that the Android 3.x (Honeycomb) operating system reserves 48 of those pixels along its bottom edge, in portrait and landscape orientations, for on-screen menu buttons" - I have several full-screen applications (and a lot of games, needless to say) that would differ with your assertion. By default, certainly, but not if the developer decides to do things differently. As far as 1080p goes, well the point is that the tablet can cope with playing 1080p video, rather than running out of steam and stuttering all the time. And it will play 1080p through the HDMI adaptor.
Keyboard: Any bluetooth keyboard will work. And if you have a USB keyboard that's classed as a low-power device, that'll work too, once you've bough the USB adaptor (which IMHO should be bundled). As will game controllers, cameras...
The video editing software is on my Galaxy Tab, so I'm not sure why you wouldn't have it installed.
@LPF: I got my Galaxy Tab at Google I/O when it was running Android 3.0 and it was updated OTA last month to run 3.1. So Samsung are committed to upgrades. I'm waiting for 3.2 to appear soon.
Faults - after running one for three months using it frequently for 90% of my non-work web browsing, email etc: Only charging from the provided charger is a headache, so I've had to buy a second (one for home, one for the office) because if I'm caught short, I can't plug it into any old USB socket. Not being easily mountable as a USB drive on my Mac was annoying - until I installed some WiFI sync software and now I never use the cable. Oh, and although the tablet plays video, just you try and find the application icon for the player. The software is there, but you can't launch the bundled player and select a video. Annoying.
Personally I don't mind the missing HDMI output - I use DLNA software to stream from tablet to TV - but Samsung would have made more friends by building in the USB hub hardware instead of charging £25 extra for a small plastic lump. Think they have an ex-Apple marketing man. Bundle the adaptor, and put two power supplies in the box - and drop the price by £50 to make it less than the iPad. Then you've got a winner.
And the reason the WiFi only version has no SD slot is because the hardware to support it is on the same chip that does the 3G... which isn't fitted. I've not found 32Gb to be too little internal storage (although I might not feel the same about 16Gb).