surprizingly enough yes, I loved them and I realy feel we should not drop it.
I always used hotkeys to spam the entire chant instead of typing it, but never used full trigger/alliace setup and did as follow::
cast mobname - hit enter
press F5 to spell the chant - hit enter
joy.
Unless there is some strict reason why not to recreate it as it was, I don’t see a solid reason to remove it.
The paste at which the combat worked, allowed plenty of time for those things. And if you haven’t prepared properly for battle and suddenly need extra spell to weave, you dig thorugh the book “shit shit shit oh yes that shit” cast new spell 
Fair enough, those who want could type on hand, semi automate or fully automated. We have the technology. And it’s purely players choice to dece how to work it out.