The IMS table I would ditch. I understand what you're doing there now, but it seems more of a waste of space than a useful tool. Not hard to look up a page reference when you get a new weapon, and most weapons are carried for some time. Thus, much better to have multiple smaller spaces to write on than a big table to ogle at. Not to mention that there's more room for error if the table was used every time you did damage.
I'm in the process of making a GM screen for Gold. The beta can be downloaded via the link in my signature. The first page has a compilation of all the most important rules exceptions in the game that you might find useful in checking / adding more crib notes. (BTW, with the exception of the Wheel of Magic, I composed the entire project in a word processor. ^^)
What I love about sheeting is that you always come away with a deeper understanding of the rules when you finish. If I could only persuade my players to be so enterprising. A few of them barely understand the rules at all. >.< Maybe they'll use your sheet!