There few ideas on top of that:
1. Change 5v5 -> 4v4 if you think it's not enough players to play a match then:
a) shorter respawn timers
b) add bot to each team
2. Score after match... It was nice to see people getting levels. Soon it will be again few people with high levels and rest at level 1. Not cool. Change it to +10 victory, -5 lose, -10 leave.
3. Joining pub game while waiting for football can be fun, but... There is AFK prevention which can disconnect player who is waiting for football match.
It's fun but it needs few improvments to be outstanding
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