I sure won't support any type of breakaway Super Euro comp like this model.
It's all about $$$$$$$$$$$$$$$$ and Marcotti says it all in this sentence

"And if you follow the U.S. major league blueprint -- a closed league with no promotion and relegation, maybe a salary cap -- you're on to a guaranteed money-spinner."

Not surprising the outed Barca Prez agreed to say they are IN for they are in financial dire straits ! by their own doing might I add.

I don't want to see only the top flight Euro rich clubs in a stand alone comp year in year out.

CL Group stages boring ? different to the WC for seeing varying NT nations (minnows) some games are no different boring BUT nonetheless good to see "variety" and cup sets when if they occur.
CL has that the last couple of seasons, many Clubs qualifying for their first time, I see that as refreshing and as these less known first timers keep punching away they gain $$$ benefit to get stronger. (excl pandemic times) Group stages is part on the theatre - your sounding like just preffering to see the big clubs.
Thats not what its about.
I like CL, just saw a Turkish Clubs 1st time in CL gain their first win Instanbul Basaksehir vs of all Clubs United - what do you think that does for that Turkish Club, their biggest scalp to date in their Clubs history.
Thats what CL is about, just depends how invested you are in watching these games.

The English FA will be dead against their top 4 clubs leaving to join this.