Most teams default to one card per occurrence and drown, or one card forever and lose the history. The fix isn't a rule about frequency — it's matching the record to what you actually need to remember.
Per-seat pricing looks fair until you do the math at five, eight and twelve people — then it starts explaining who gets left off the tool, and it's usually the person you most need to see the work.
You can't take a Friday off because three people would need to text you to keep working. That's not a scheduling problem. That's the whole business running through one head.
The reason most teams never adopt a project tool isn't the tool. It's the imagined weekend of copying three years of history into it before they're allowed to start.
Two teams rolled out the same kind of board, watched it drift within a month, and quietly went back to asking people directly — while still paying for the software.