It can seem a little messy yeah, but I dont think its last minute communications, it is pretty usual for tournaments to be like this if you are used to Cs and lower tier events enviroment, its just that Riot/Valorant events usually come with a lot more info for regular ppl.
The lack of advertising of the rules etc is prob due to the fact they are organizing 30+ tournaments, not just Valorant.
Bad format is subjective, I really like it and think it should be the norm (except for playing more than once in the same day).
If they aren't broadcasted indeed its a pity.
As for the Schedule, it may feel congested for viewers, and maybe EMEA teams, but I think its fine for americas, most teams got 2-3 week breaks before it, and if it wasn't for EWC they would go 2 months+ without playing?