My two suggestions to making this the BEST SEO software on the market:
1) Use NON geek language in descirbing its functionality - alot of people are put off/give up using SEO tools, because they simply don't understand what the various functionality is/does - just keep it straightforward and BAM there's more customers for you rightaway - it'll also help lighten your helpdesk workload!
2) Develop a few clearly explained [with voice-over] video tutorials, nowadays cheap to produce and again, just doing this, puts you ahead of a lot of your competition!
Hope you don't mind my suggestions - it's just more than once, I see tools which may well have good coding and features, but look scary, have poor-to-none understandable instruction and take along time to plod through and learn - and I'm sitting there steaming, thinking "WT*, I'm running a business here and paying someone to supply me an seo tool - I can understand and use!"
Best to you - I'm really looking forward to your new generation tool and if you can keep the above two points in mind, a big slice of the market is waiting for you!