The Google Drive previews need to be improved so we can see a preview of the document within chats. My team uses a Shared Drive in Google and the files by default are restricted access to within the organization. Even though I've linked my Google Drive account with the organization and given permissions, it still doesn't preview documents in chat unless it's set to public. Please create this seamless integration.
Slack supports this and it makes it so much easier to visualize what a document is in the chat channel for easier navigation and skimming through chat.