Bad move Jeff. It didn't work for Des (Lynam, not O'Connor who I thought was perfect for it) and I can't see it working for you.
There is a big difference between the fast paced nature of sports presenting and the sedate relaxed feeling of Countdown.
What's Jeff going to get excited about? The letters as the new Carol pulls them out?
You are a God Jeff just as Des was. Don't ruin it by making similarly poor career decisions. Just stick to what you do best.