I would say there’s a less than zero chance McIlroy would agree to that. Leona Maguire might be a good shout if you want a golfer to do it. Lowry would absolutely agree to it
For me I’d like to see rowing represented for the first time since 1976. Considering she re-started Irish rowing almost single-handedly, I’d give it to Sanita Puspure in her final event (if qualified of course)
Boxing have had the last 3(!) so maybe another sport. If going with a male athlete, Mark English would be a good lifetime achievement award and a rep for Athletics