As a person who has 4 dedicated PvE characters, and who plays a lot of PvP (over 60K faction), I feel as well that one slot for each primary profession would be great. I'd love a PvP exclusive slot, but that's icing to me, as I use my PvE characters in PvP and do just fine.
I have been considering a second account, because all 4 of my characters have finished the game, and I've moved on to farming, because of a lack of new content (other than the recent Wintersday stuff, which I finished).
However, I am reluctant to buy a new account because of the unlocking problem (and I'm a person who likes 100% completion, so I'd want everything unlocked on both accounts!), and with Factions coming out, I am continuing to hold off. In addition, there is new content coming out for all of the professions, to my knowledge, so why would I want to give up a completed lvl 20 ele when she's going to get new skills when Factions comes out?
Coming from a technical background, I can certainly understand why A.Net doesn't want to merge accounts: there is no way to automate it; each request would be a separate trouble-ticket into their technical support, and even if code was written to automatically 'merge' data, it's still a lot of work.
However, I believe (and A.Net, correct me if I'm wrong), the mechanism for adding character slots to existing accounts is already in place for Factions.
While I see potential concern from A.Net regarding the economy or 'fairness' for those who could buy more slots; I see the purchasing of 2nd-hand accounts as a bigger problem. I don't want to pay $50 for another key, but I would pay $12-20 on Ebay. This means that A.Net doesn't see any of that money. I'm stuck buying a redundant product, paying for software and packaging, when all I really want is the slots. People are getting these slots if they really want them, for whatever their reasons (mules, farming, more primary profs). Why wouldn't A.Net buy into the idea of more slots for sale? It would be money in their pocket (as opposed to resellers on eBay), the mechanism is in place, and it's happening already. Personally, I'd pay $10-20 for an extra slot.
To people who say that 4 or 5 or however many is enough; it's clearly not for many PvE players. Due to the length of time between significant content releases (no complaints, it's just the development cycle), I'd consider it a pleasure to be able to start a character with a new profession from scratch and play through the game again. Doing the Fort Ranik mission with a level 20 just isn't the same. Having more slots means that I'll stay with the game longer.
The incentive for A.Net to do this is that I'm going to get bored with doing the same missions or farming, and put GW to the side in favor of another game. Maybe I won't bother to pick it back up again, which means that I will pass on the expansion (again, no threat, just an observation of a possible outcome).
I support the idea of the maximum number of slots on one account (plus 1 for pure PvP, but icing for me, as I said) to be equal to the number of professions in the game.
I understand that far, far into the future, there may come a time when I cannot play all 16 of my characters through the next expansion, but the amount of time it takes to play depends on the player. I say we tackle that when we get there.
How we get them?
-Buy them: $10-20 per slot, allowed for owners of either C1 or C2
-Release enough slots with Factions to give 8 slots to all owners of both chapters.
My preference is to purchase them. Why? Because that's how A.Net can customize to the needs of the players. To those of you who say 4 is plenty; A.Net doesn't have to set space aside for your potential slots. For folks who want 8 slots, well, we'll pay up to have them (gladly, in my case).
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when search is back up check my recent posts as i gave 2 methods (other peoples) that work.