If n is too high, you risk giving away your app. Check out
http://exitstrategynyc.com for an example of a decent (IMHO) app landing page. You're welcome and realize that some of the feedback you get will annoy you - don't take it personally, especially if it's from a non rockstar (hints of elitism in your copy).
Now a tangent: Bugzilla seems to not be very corporate / because it is free. We had a Wiki at the department-level but only until someone powerful saw the value of that (knowledge sharing, freeing information usually buried in a thousand inboxes) and brought in Atlassian's Confluence did it take off, such that it is now literally enterprise-wide. Corporations don't want free software, especially if it looks free, like Bugzilla's PHP UI implies. Corporations want polish. They want license agreements. They want evaluation versions that can be locally hosted and maintained by IT (e.g. you'd sell a server + mobile client package). They want to pay you money to make their daily tasks a bit less tedious. They want to pay you lots of money to make them look good (for proposing your product). Yes, this might not be the direction you want to head in but corporations are looking for your product.
If you can make a version for Atlassian's $$$ Jira - that is a serious corporate market -you might want to just out of the blue contact Mr. Peldi of Balsamiq and ask how he developed his Confluence plug-in (e.g. did he initiate a relationship). Please consider Jira - if nothing else to see if they are open enough (web services or plug-ins) to make it feasible.
I would try a full version that is limited to a public demo database (with permission, ideally a clone in the past of a major project or at least one that enough bugs to demonstrate your performance - neutered, of course, in that assigning a bug does not send real notifaction emails).
Or, as doublec has suggested, a special version to demonstrate linking to the databases at bugzilla.mozilla.org.
Or, use the ad-hoc (UDID) feature to distribute time-limited, domain locked evaluation versions for corporate evaluation.
Either way, the cost is so high you need to let users try it hands on so they can see the value for their own Bugzilla instances.