How about Execlusive Username with Membership?
If a user wanted GoldFinger as their username then the game would move all other users that have the username of GoldFinger to an alternate username, example GoldFinger2. Now when GoldFinger2 logs in next, he will be prompted to keep his new username or pick a new one for free.
No, too much trouble and trolling potential. Plus what benjamin said.
Execlusive Forums for Members only?
Seems interesting, though no actual use for it comes to mind.
See the last 10 past games of any WarLight player?
+1 for this.
Promote Ladders on the promoted game section?
+1 to this too.
Third Type of Sound Notifications - Highly Critical Sounds?
Indifferent.
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My suggestions:
-Boost in points (something like +10% or +20% if you are a member - it is reasonable)
-Making public tournaments with no coin prices nor rewards (meaning: tournaments anyone can easily join through the public tournament option, and without being specifically a coin tourney)
-.gifs for profile pictures
-Mail threads with more than 20 people (30 or 40 maybe?)
-Customisable/reasonable profile link*
-Being able to click more than one territory/bonus at a time when making custom scenarios for convenience (example: I want all of Africa to be given to a specific player on Medium Earth - make it so I can shift-click every bonus and then just add in the slot)
-Capacity to pick a slot when joining custom scenarios rather than having to decline and rejoin all the time
*Example: Mine is "https://www.warlight.net/Profile?p=8638136582?" - if such feature is added, I can change to "https://www.warlight.net/Profile?p=Zephyrum" or something like "https://www.warlight.net/Profile?p=Praise_Your_Lord".