It'd be nice to be able to leave a short explanation of why you suspect a player is cheater. Sometimes it is a bit more subtle than just 'these specific rounds were suspicious' and can involve the context of the other rounds.
It'd also be nice to be able to say 'This round felt suspicious but I am not definite - they might just have been really lucky or happened to have had local knowledge', so it could be combined with other people's reports to see if there is a pattern.