I think it would be convenient to have a new round marker when using full match capture mode. I've looked for this event in every recording software I could find and, to my surprise, never found on with it. Such an event would be highly convenient for round-by-round analysis, and it'd allow people to find certain parts of the match faster. Plus, you'd be the only one with it ;}.
I tried triggering the screenshot event at the start of every round to simulate a round start event but remembering to do it has proved to be a nuisance. I then tried attaching the screenshot event to my 'buy phase' key(since you press that at the start of every round), but the key press event wasn't getting passed to Valorant so I couldn't buy.