Gmail Annoyances

For the most part, I'm a happy Gmail user. However, there are some annoyances I wish they would fix.

• When I use a different from: address, recipients see the dreaded "On behalf of" message.
• Signatures - how about an option to not append one in a reply or forward? I hate having to scroll to the bottom of the message and manually removing it.
• Why are contacts automatically added when I email them?
• Can I please have a first AND last name field for a contact? This would make importing into my Blackberry so much easier.

The last time I wrote about Gmail, I asked for a calendar application and Google obliged. Come on, Googlers.