Could be, but I was thinking in very general terms.
Events that in the way they are presented, carry a "cinematic feel" with them. This could be in-game cinematics/cut scenes as introductions to boss battles with a camera fly-over and a fitting voice line, but it could also be embedded in the gameplay during these events and/or bosses.
Maybe the easiest way is to give these events more reactive Components to them (such as voiced or obvious gameplay reactions to OUR spells and abilities during these events). Thats basically what I mean when I say Scripted bosses. Scripted to give a cinematic and organic impression.
