I wonder what tomorrow's route announcement will be, the alleged reductions being offered in landing charges is certainly having the desired effect!
Whilst I don't think that any reductions in charges would be sniffed at by airlines, I can't see that it would be a deal breaker on it's own.
By far the biggest factors in bringing in new business will surely be demand from the travelling public (doesn't matter how low the fares are if there isn't demand) and the current comparatively low cost of fuel which makes what might be marginal routes worth a punt.
I can't see that fares have dropped all that much in the last couple of years, whereas crude prices have more than halved, so break even loads are probably lower than they would have been when oil was $100 / barrel.