Firstly, online password managers (e.g. Clipperz, LastPass, Passpack) need to go mainstream (e.g. be bought by Microsoft or Google), so that I can trust these services with my bank details (if they weren't secure enough, the big names wouldn't take the reputational risk). And with them, online form autofill services (e.g. LastPass).
Secondly, OpenID or an equivalent needs development and publicity (to get widespread adoption).