Burns will bring other options other than Walsh. If Walsh has a off day we still have a very capable halfback to direct us.
He takes the line on a little more than Walsh, he's a clever player with a decent kicking game which takes the pressure off Walsh to do everything.
Most importantly IMO, other than being a good player, he's a born winner, he doesn't like losing and has a aggressive nasty streak in him that we have seriously lacked. Burns is the sought of player that will lead by example in terms of showing his aggression which will rub off on others.
It also frees lance up to play as utility for us and most probably spelling Robes at hooker. Robes getting 15 min spell rests will do him the world of good and I doubt a few tired forwards will like the sight of those two interchanging and running from dummy half.
All in all, I beleive Travis Burns is 100% the player we need and everything he brings will certainly improve us in the halves.