Adding other IMAP search keywords beyond FROM, SUBJECT, TO, CC and BCC is actually a must: My e-mail provider ONLY supports the TEXT keyword, so I am not able to carry out the server-side search at all.
Nowadays, photographs have size comparable to e-mail attachment size limit and generally it makes no sense to send 10MB photos in most cases. It is very clumsy to resize images outside the application if one needs to attach them to an e-mail. Please ...
I fully agree that it is completely absurd to remove the option to search for the past events. I actually use events search just for the past events to know when some event occured for the last time and how long it is ago.