The 12 Scottish Premier League clubs have agreed to push for a new combined league with play-offs between the top and second tiers and a pyramid system below the 42 clubs. The SPL, which was formed 15 years ago following a breakaway, does not have a sponsor in place for next season and Topping believes a united league would be more attractive to potential backers.
Topping, who is also chief executive of William Hill, said: "I think it's much easier to sell something which has the backing of all 42 clubs. Why William Hill likes the Scottish Cup sponsorship, for one thing every game is a meaningful game.
"And it involves all the clubs in Scotland. We are able to say the money gets distributed across the game. If we were looking at the sponsorship of the league, which we aren't, it's much easier to look at a 42-club solution and go back to your board with a proposal to back Scottish football rather than one element of Scottish football."
Topping has grown frustrated with the lack of change in his spell at the SPL, which is about to come to an end after three years. But he senses there is a real chance to deliver reconstruction following Tuesday's decision.
The plan, which would not change the make-up of the divisions, is more realistic than a previous proposal for a 12-12-18 system with a controversial split, which was vetoed by St Mirren and Ross County last month.
"It was a big step forward for the SPL," he said.
"To have 12 of the most powerful people in Scottish football agreeing was a pleasant change. We have been progressing over the last couple of years, infuriatingly slowly at times, but you should never knock progress.
"There's a number of steps we have to go through. There's the formal ratification of this, which I don't envisage being a huge challenge for the SPL. And then there's an acceptance by the SFL.
"We would like to move very, very quickly on this. I don't see any reason why we can't. This isn't a hugely complex subject. If you look at business, there are far more complex transactions that are concluded in short order."