It's classic American sport / TV exec thinking that their model is best and should be replicated everywhere else.
The thing is, their model isn't best. It might suit their country and their culture to have a closed shop where all of the biggest "brands" play each other. Works well on TV for the hundreds of millions of casual fans who have no particular affiliation to one team over another. They have a country of 300million people and 20 professional teams. It's big business, the league itself is more important than the individual teams.
In Europe it's a little different. We have a population of nearly a billion, and there are thousands of professional teams. Support is very much more localised and in the majority of cases passed down through generations of families for over a hundred years. If you tried to relocate Borussia Dortmund to London because it had a wealthier demographic, there would be wars on the streets!
America should come to Europe and learn from us, not the other way around! The Premier League is the richest, most watched sports league in the world, who the fuck are some NFL execs to tell us how to run our game? They should be asking us, and learning from us what is so successful.
The reason football is the most popular game on the world by far is because within reason, any team can beat any other team on a given day. That's what gives people hope. That's why you get millions of people turning up to watch lower league shite teams every week all over Europe. They go because they have hope that their team might eventually win. City being a prime example. When I was going to City away at Macclesfield I dreamed one day a miracle would happen and we could one day win the top flight again. I didn't think I'd be sat here 20 years later saying I've seen City do it twice, but it happened. Going through all that shite, having that hope, it was worth it.
If you strip away that hope, make it impossible for teams to get to the top and win, what's the point? That's not sport, it's sanitised corporate entertainment.
Even if they keep it as an open shop, with 2 leagues of 8 teams, yes you'd get guaranteed games between the "biggest brands", but there's a problem. The last 5 or 6 games for half the teams in the leagues would be dead rubbers. When it became clear that they couldn't get in to one of the top two positions, what's the point? Nothing to play for, why would anyone watch, or care about those games? The reason football is so exciting and popular is because it's so competitive, anyone can win. In TV they call it "jeopardy", it's what makes thinks dramatic and engaging.
If there is nothing riding on those last few games, nothing to play for, no "jeopardy" why would anyone watch? Just because it's AC Milan vs Arsenal, people will watch even if there's nothing riding on it? Don't bet on it! Teams would send out their youngsters and save them for league games.
The reason people are getting bored with the Champions League is that there are too many boring, meaningless games. This proposal is to keep the boring and meaningless part, but do it with more recognisable teams. It won't work.
The best way to reinvigorate the format is to make is more competitive, less dead rubbers, less mismatches. There should be a knockout competition until you get to a last 16. Seed it if you want, like they do now to protect the big clubs. Then have 4 groups of 4. The 16 best teams in Europe. No seeds, anything goes. The top two from each pot goes through to a quarter final, and then the format takes care of itself.
That way, you keep the competition open to all, everyone has a chance. You will get the shit teams playing the big teams early on, but it will be interesting to watch because anything could happen. There would no doubt be the odd upset. Then in the group stage, every single game would count. Every match would be interesting. You'd be guaranteed to get big clubs playing against each other, and more importantly, something would be riding on every game.
And in that format they could have one Champions League match on per night. At the moment there are two, this way you could do it with no clashes so every game is televised without a clash so the sponsors would be happy.