TL;DR
Now for those who like a long read. There are a few things we need to discuss and think about. Well a lot of them.
1. What? I think the community has done this well so far. But let ALL of us together be clear and decisive about what we want from this merge. No beating around the bush, they asked what we wanted, lets make sure they are 100% certain, everyone involved knows what the community as a whole wants.
2. How? Depending on what kind of server merge we are looking for requires not only software changes, but perhaps hardware changes as well. As of this post it appears there is a vehement out crying and outpouring of effort for AGROPIG.
YES stupid MS Spell check... Add that to the dictionary...
We need to think about the amount of work involved on their end. It's not M/WD flamespam easy for them.
3. Consideration. There are many aspects to consider lets run through them.
3.1 Problems with the server merge itself.
"Your shiz will be lost in the void 'ARGUMENT'." Yeah well stuff happens. To that crazy person who had 14GB's of screens. AWESOME! You guaranteed none of your stuff will get lost. It's going to happen regardless of how well they test the merge system. Be prepared. EXP,TP gear, stats, housekeepers, guild stuff, titles, quest log, currency Tab, crafting skills, backpack, bank... EVERYTHING you can think of screen cap it all, before this merge happens.
"Duplicate Character names 'Issue'. " I'd suggest a rename system. Seems the most straightforward. If two people have the same name already, allow one of them the name first. Don't open it up to anyone before they both get to pick whether they wish to keep or rename.
"More then 8 Characters." all of the 9 and above characters need to go. IMPORTANT: allow for people to at least SEE the character's visual representation. I own a monopoly on my characters names.. This means on every server I have 8 characters all named the same. Because I'm not a fan of impersonation. Attempting to merge 64+ characters with 8 named DerpedMyPants, I wan the one that's level 87. Not the level 1's.
"PvP, verses PvE". I think we have kind of solved this one already. PvP people sound like they are willing to make compromises, which I give a standing ovation for them. Considering this means they need to use ABL's now.
"Channel forcing." After a certain population has been reached a certain channel in a certain zone. Lock it out. Failure to do so, may or eventually WILL result in channel crashing, simply because 127,000 people tried to be in channel 1 Varanas for a GM event.
3.2 Concerns the community has, but not directly related to a 'working' merge.
"Questing issues." Ever have that really annoying quest that the item takes forever to spawn. Yeah multiply that by about 10. Assuming there is another person or 2 doing the same quest you are.
"Stop the abuse." Let Thalia have it's wish. It's all they have ever dreamed of... Merge them in with us. We want it for them, they want it badly.
"Channel Number." A VERY VERY important issue for the community. 4 channels will be simply unacceptable. If we actually get AGROPIG like we have been asking... I honestly can't see anything LESS then 20 channels being acceptable for worldbosses. According to my math, we have on average 3 * 8 = 21. And I know for sure Artemis and Govinda have 4 channels.
"Auction House" Going to need a merged Auction House for sure. However... We are also going to need the option to sort more then 500 Items at a time. All the Int/MA's wont show up. They just wont.
"User responsibility." Differing thoughts on this subject topic. The easiest is to make an announcement a week before the merge and have everyone remove everything from the Auction House and mail, as well as other assorted server based storages. (Not bank, house or backpack stuff though.)
4. Issues that will arise post-merge.
"The DBag count." It's going to go up. No matter which server you are on. It's going to go up. Your going to see them in world chat. Your going to see them hanging around Varanas... It's going to happen.
"WorldBoss Drama" It happens now, with even the minimal of 2 guilds capable of doing it. Yeah like 20+ guilds all competeing for Proofs... No issue at all here.
"Recruiting." Guilds are going to be condensing, and merging. No one will escape this. Brace for impact and before the merge make sure everyone that can invite in your guild is clear of who you want in, and who you don't.
This is all I can think of. Let us address what we expect in these areas. Let us remain calm and remember this merge will not take place in the near future. But let us plan for it. Everyone needs to be prepared and be ready and willing to make compromises of some type. Edits MAY take place In the future as more issues come to my attention or as I think of them.
Also Check the Signature. Support Merging of Thalia Please. (Order is Irrelevant, could Easily be AGROPIGT)