As a team that heavily uses the shared conversations inbox, we find that the current method of having an individual conversation's messages listed with the newest at the bottom has a lot of drawbacks. Currently, messages more than a few lines long get truncated with a Show More link. By having the newest items at the top, HubSpot could eliminate (or drastically scale back) the "Show More" prompts, since the newest information would still be available at the top and longer messages would just continue down the page. Additionally, it's much more common for content areas to web default to the start at the top and then have people scroll down for more information. The current implementation has content areas scrolled all the way down to the bottom and then users have to scroll up for more information.
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