Thanks to all so far. We have deliberately been keeping a bit quiet in the hopes of getting a dynamic, free flow of ideas. Although green and white are what we currently use (and referenced), we are open to other color suggestions (with or without green) so please feel free to think broader early in the process. We are looking to you all as the experts to help us define our concept, so please don't necessarily get locked in to what we currently have (i.e. the box), or what we are commenting on this early, but here are our thoughts so far. We like #6, but it may be because of familiarity, it is very similar to our current letterhead design - again we need something other than the diamond though. We like the strong graphic nature of the box in #10-12, but it reads too much like a "W" instead of an "M." Also, graphic or abstracted imagery are a possibility (there seems to be some allusion in a few of these, which is a good start), some possibilities: abacus, ledger paper, graphs, stock ticker, etc. (please think of others).
We need several more concepts to help us focus on a direction. Please feel free to submit "loose" concepts as well. We are capable of taking "sketch" ideas as starting points for discussion.
Thanks again for your effort so far.