I've gotten some terrific feedback on my renaming exercise... here's where things stand right now:
I've gotten several comments that I should keep Mantra in the name. The pros are that it has some brand equity (at least in the blogosphere), and a few people think it can be evolved to fit my new focus. I'm personally not so sure about that. Mantra, to me, is simply a repeated phrase. It's the vision or brand statement that pulls a company together. So it's great for a branding company (my original intent), but maybe not so great for pure customer strategy. It seems a bit too marketing-focused to me. But hey, maybe I'm just too close to it. I'd enjoy hearing your thoughts on it; I may be persuaded otherwise.
The alternative name that I like is Orbital... implying a 360-degree view of business from the outside-in. It's extremely extendable into anything else I might get into, future-focused and global (I'm starting to do a lot more international work). I also deal mostly with b2b and tech clients, and this name would seem to resonate a bit more with that group than Mantra, which seems a bit voodoo/new age-y to some (to me, anyway).
Tom writes a comment that choosing a name becomes an obsessive activity for most entrepreneurs and small business owners. I think it's because one's company name is an extension of one's own personal brand (which means I probably shouldn't be asking for advice :-). However, I also think that a brand is created collectively and that it's helpful to get the outside-in perspective. So I'm taking my own advice: being transparent and soliciting that outside view that I seek to provide to others. Your vote and/or comments are welcome!