Thanks for all the careful feedback I am getting! To three suggestions I could respond rather quickly:
1) straddle and calendar graphs have now week markers (thanks @mimbe)
2) The IV over time graph now shows the trailing 2 years to display IV during different market environments (thanks @Yowster)
3) The filters on the upcoming earnings table are now above the table and the table will update only with pressing 'Search' (thanks Steve)
There is more to come but now need to take care of a seminar next week. Looks like I will be able to add some more pages to the site faster than expected. So will just let the beta phase continue for now...