Glad they are doing something, and hopefull they will improve it.
For me, it's NOT better than nothing. I can type more accurate info in quicker than it takes to modify the current file they provide.
It doesn't do it automatically, so it's not like it will 'save you' from forgetting to document your trip. You can still just as easily forget to download the file, as you might have forgotten to type it in.
I also can't send the file to my phone via bluetooth, which i can do with United's 'add to calendar' feature.
But, lets hope they improve this and get it right, because it could be a very nice feature if well executed.