The EU tried this before in the 80's That's why early K bikes were right at 100 hp. Anyway whatever blows their skirts up I suppose, most of the bikes I've owned have been just over or just under 100hp and I never felt cheated.
They did tiered licensing here in The Democratic Peoples Republic of Washington a few years back, 500cc was the break over. I actually thought it was a good idea, the first year or two your MC license was good for up to 500cc bikes after that it was unlimited. I personally don't see a problem myself, there's no realistic argument for allowing an inexperienced rider on a large displacement bike. Let them get their feet wet and learn some basic skill's on a small bike then retest on whatever you want.
I think it's a step in the right direction myself. I don't think 100hp limits are "bad" either, it looks good on paper and the vast majority of riders wouldn't notice the difference anyway. Nobody on the street with any kind of life expectancy is using anywhere near the 150 ~160 HP available on their bikes except Moke no matter what their Sport Bike fantasies are. Restrict them to 100hp, the Pol's can say they did something the insurance companies can all smile and pat each other on the back because they got their way and we can go on about our business.