Webmail has been the same old for too long. What do you wish your web mail had?<p><i>Even better spam filters?
</i>Absolutely no ads?<p>And, are you already happy with what you can do with IMAP across all of your devices?
Gmail was a huge step forward from Hotmail/Yahoo. People went from 4MB storage ad-riddled sluggishness to massive storage AJAX interface awesomeness.<p>Unless you have ideas that are as big as that you probably shouldn't bother stepping into the ring. The product quality bar is very high and so is the lock-in for email (Yahoo/Hotmail are still bigger than Gmail).
I love Gmail's filters.<p>Labels/folders, no ads would be awesome, IMAP (and Push) is exceptional.<p>I'd like to see everyone implementing Gmail's "conversation" layout but not taking it to other level—making email look like chat, that is.<p>Plus, I'd like the feature to export all of my emails from one account whether it's Gmail or Yahoo, etc.