I tend to split to the front at the lights but stay between the lines of cars (I know that's not everyone's preferred approach). When the lights change and I launch I tend to keep my right leg hanging out there a bit - not a long way, just a little. Left leg is changing, but not putting the right straight on the peg means I have a few more weight options to pick when lane I'll head into. I'll always be across the intersection before the cages have moved much at all, but sometimes the guess of which will go harder has been wrong - and some extra mass means I can make the switch easier. Yeah, I guess this is close to a 'which glove?' thread topic, but what the hey, it's something to talk about.