Already spoke multiple times with Riot about potential changes in the system but they are committed to this concept for now which I get.
The key problems are these:
Riot is not financially supporting the tournament organizers which can result in what happened in Polaris where they just cut an entire broadcast day and put someone with no observing experience as observer for split 2. Reminder EMEA Ascension had no prize-pool so if you made second place in Ascension you did not even get some money as a consolation prize.
OFF//SEASON information only gets revealed in August, which means that Challenger players who did not make Ascension have 3 months where they have no clue what they can even compete in once Champs ends.
Most regions had no time to establish grassroots or local communities that actively watch matches and since VALORANT was born during a pandemic the game became way more internationally oriented than nationally which then blows my mind why Riot wants regional leagues.