I'd love it if Marketo could automatically create a Webinar .ics file the way WebEx does. It would be a time saver, but I already save so much time with the new plug-in that this is definitely not a deal breaker.
Awesome, I was just typing in the same idea and found this one. As a work around you can dynamically create the ics file within a SF visualforce email template and send from there. Of course the downside is lack of tracking but end-user expirience should trump measurement anyway.