It might be a good first step.
As for IC routes it will actually be fun if you'd have to get government approval for them in a future system overhaul.
Also, maybe 5000km-6000km routes shouldn't be considered as intercontinental as it ruins some game strategies.
And btw, at least in my case, IC routes aren't that profitable anymore. I make max 1 million for a single a380 on IC route, 650k-700k of this has to go to service quality to keep it steady, and combined with the true depreciation costs, there really isn't much left. I'm sure many middle-sized airlines are more profitable than me.
Overall, I still think there should be no limits on IC routes(just other limiting factors) in the future. But for such a big change, a reset might be necessary