I disagree to your 2nd point in Normal
(2 - No tickets required)
1st and 3rd point in Ranked suggestions
(1 - Solo modo only , 3 - Punishment to intentional feeding/quitting)
2 - If you place no ticket then blood tokens will lose there currency power and people will endlessly farm for blood tokens no matter how less the reward will be. Instead there has to be a restriction on that by maybe giving more tickets (example lets say 100 tickets per day) But objection for no ticket entry.
1 - Arena is supposed to be a Team game, In solo mod we don't know which class will end up being together OR which type of players will end up together,It wont change anything as arena's are today (Example All tanks in one team or all supporters end up in one team) Then again this game give Luck factor in team as well.
Instead my suggestion is Let the game decide the Random team with different class but not same class in 1 team if you want solo joining OR you can choose team with different class before and can join as team
3 - Most of the times it is misunderstanding and people think that player is doing things purposely, but there are some genuine issues which neither game nor the community will able to figure out whether the person is guilty for Intentional wrong deeds or just some technical issues. Many people will be wrongly accused for things which they haven't done purposely OR vice versa many people will take wrong advantage of the fact and come up with clever ideas to get away by intentional doing wrong deeds and proving they are innocent.
(In my case i have power issues and Net issues, So if other player like me with some different issues game cant decide whether he is actually guilty or innocent)