Hello,
1. The whole idea of having more people in late game is exactly because people quit and there are always only 2 alliances still fighting at CS. More slots on them = more people to enjoy CS on end-game.
Though since we'll have a CS V3 on next edition(s), the guild-alliance system will be changed once again.
2. It was exactly like that in past and community wanted the vice-versa (less time on stage on early resets and longer on higher resets).
3. There are enough activities available for active players, we don't plan any new ones.
4. & 7. - there is already a big rework for entire economy incoming for the next edition(s).
5. I do remember that summon CD is still on CD after relog, but maybe I remember it wrong. If it's the opposite then yes, we can add such extra CD after relog.
6. There needs to be a fight for more than 10 minutes on such boss, if gates are closing after 10 minutes and there is a fight where only 2-3 characters without a DL remain alive then even if they won the PvP fight, they can't finish the boss.
Feel free to leave your suggestions / feedback in this topic, we will consider anything good for future in terms of improvements.