Vandy et al
page - the third grey box below the path links - still has the entire cast
that we know of.
The front page list is supposed to have only the active/current members of the cast - those who are in itnow. It's not supposed to have those who have left the show. On Sumukhi, Akansha, Yash & Jaya, there is still a question mark, but for now, it's fine for them to be there. It was a mistake for Raghav not to be gone, since he too has left, but now, that too has been rectified.
The front page will reflect the current cast list. Sriti, and for that matter Harshad, were an integral part of this show. Not any more - they've left, and so what we show in the front are those who are active in it. Sriti & Mala both shouldn't be on the front panel simultaneously.
Same thing - this serial was arguably Jhanvi ka kahani. Jhanvi is history now as far as this serial goes, so no point arguing about whether it's about her. Even if it was, it's not any more.
For the moment, the only ones there would be Mala, Vinay and KVB, if they don't show Gayatri or Uma anymore. If and when newer members get added, that list too will be updated.
The internal cast list, which I linked above, has the entire cast (barring unknown people like Sundar, Jhanvi's father, the original Sia, and so on) What you see on page 1 are the people now active in the serial.