On pricing page: I agree this isn't perfect. What metric would you like us to segment our plans by ideally? We want to make this as simple as possible so folks know how to budget for this and so they can easily know which plan makes the most sense for them.
On additional features: Are there any other "value-add" services you think bigger companies might want besides just more visitors?
On 'select container': we realize this is a bit confusing and we're working on implementing a multi-select almost exactly as you described.
On choosing conversion action: right now we automatically track all reasonable conversion events on a page (clicks, form submissions, subsequent pageviews, custom events) and we want to make this even easier by allow you to explicitly create a custom conversion event to track by specifying it when you are editing the experiment.
On automatic suggestions for how a page could be changed: this is a hard one and we hope to get there eventually. In the mean time we're going to try to do a better job blogging about best practices and lessons we've learned working with our customers.
Thanks again for all the feedback!