Firstly, thanks for all the work you're putting into this, and in making an OpenOffice.org version.
A few things I've found when putting my gear in. For reference, this is the setup I'm using:
chardev.org - A World of Warcraft character planner v.3.a.
Firstly, I have three pieces of the Beast Lord set, but the spreadsheet is only saying I have one. Under the "Item Set" column in the Gear tab, only the cuirass is listed as being part of Beast Lord. The mantle is "Dungeon" and the handguards are "1".
Next, I can't see any explicit support for the 4-piece bonus from Beast Lord: +600 ArPen to the hunter for 15 seconds on every use of Kill Command. I'm currently adding this in by specifying that the target has the Expose Weakness debuff, with a modifier of 600 (I had to go in and modify the cell's validation since it is capped at 500.)
The gear planner is fantastic, but I think it could be nice if each list had an 11th slot for your current item if it happens to not be in the top 10... even with everything unchecked, my current gear doesn't show up in a lot of places, which is somewhat worrying. It also doesn't tell me how far off the list I currently am. :P That said, it's nice to know that I don't have to worry much about upgrading my goggles until I hit Black Temple, if that even happens at all.
Again; fantastic work. Many thanks.