Webcam shall be used in conjunction with Kiddush haChodesh, and as soon as the Av Beis Din declares “Mekudosh” & the assembled respond “Mekudosh Mekudosh”, within a second the entire world will know which day is Rosh Chodesh, and the entire need for Yom Tov Sheni shall be obsolete, except for Rosh haShono.
Depending on whether one lays Tefillin on Chol haMoed or not, this shall give 3 or 5 extra opportunities each year, to fulfill the huge Mitzwo of laying Tefillin. …….. Then again, Eliyohu haNovi may clear up this issue once & for all, as to whether Tefillin should be worn on Chol haMoed, or not.