I love to see anyone taking on salesforce.com, but your product so far is way too barebones. It reminds me of something I'd get from just using some admin UI for a database.
I was a salesforce technical architect and consultant for a number of years (hated it.) and what I've seen is that some of the first things people look for are reports, dashboards, workflows, integration. A lot of people think their sales process is super unique and want to see a path of implementing it in a system and that includes integrating it with a bunch of other systems already in place.
For smaller companies, sourcing leads, creating and tracking email campaigns, is probably the first thing they look for.
Some feedback for your website:
* gifs/videos take a while to load and stay blurred
* The linkedin example is great, show more like this
* Ability to add custom fields/objects is expected, doubt anyone would be impressed by that
* Show some canned dashboards and reports on the data