2. +
3. +
4. -
5. +
Comment:
regarding point 2 - I would prohibit choosing a hero when playing as Necropolis; only random selection should be allowed, with the same addition regarding Galtran!
regarding point 4 - this existed in the first game, but I'm sure it doesn't differ much from a bad outcome when taking the same Drowned Ones (the player takes only the minimum, and it's terrible compared to the opponent who takes 2-3 non-minimums, and it's a complete disaster, or unfavorable secondary spawns).