Comments on InDesign Share for review feature

After a fair amount of searching these posts, I was finally able to get this feature to show up. This seems like a bug a lot of folks are having. Hopefully, this will be fixed in the next iteration. I also have noticed a few things that if added could make this feature more functional:

• Please add the ability to make changes directly (like pdf comments) from reviewers.
• Some type of spell check would be appreciated especially since the panel is small and can't be expanded.
• Why is there a limited character count on the designer's end? I find that I still have to send an email to the recipient for complex issues that need more explanation. Can this be removed?