new cup formula (3v3,6v6)

Nowadays 3v3 is rather more popular and active than 6v6, but the system of tourney.cc (not only but bracket system) is starting to be boring. People gather themselves to have some fun but half of them are out after the 1st round because of badluck or too skilled oponent. I have an idea to improve 3v3 (maybe 6v6 too) competitions smth like cs format I mean every round game lasts around 30 mins without deciders or even less. The idea for competitions is to put some groupstage phase and play there against each other one map battles so the scores possible are 2-0 or 1-1. Every team could play more than one games and spends more time on the battlefield to have some fun ( i'm not counting fun as being owned every game but seriously can't do anything with that, you just have to improve yourself in this semi-dead game).

For example:
12 teams = 2 groups x 6 teams.
Every team plays 5 matches (2.5-3h)
best 3 pass to bracketstage like in cs = 1A vs 2B/3A || 1B vs 2A/3B (one more extra round for 2nd/3rd places)
1A vs 2B/3A || 1B vs 2A/3B BO1 (double fh = adler/frost as decider)
Semifinals/finals ettv. BO3

The cup for winners is smth like 4 hours or more (delays)

This cup formula for et has a big disadvantage because its stopwatch, not rounds game so if 2 teams has same scores i mean e.g 4 wins / 1 draw agains each other (for group of 6) we cant choose directly better team for 1st place. For me 2 options : counting times like e.g in LOL but I suppose ppl won't like it ( it means teams has to update screenshots and next delasy) or luck or unluck by cointoss on the serv.

Give ur feedback what do you think about this idea, any suggestions what to change, is it worthy to give it a try etc.