Shadowbane released as a top 10 pc game in 2003...was trying to google the number, but havent quite tracked it down, but i want to say box saless were in the neighborhood of 300K copies within the first week of release. THis was good, but also horribly horribly bad since the servers/code couldnt handle the level of people that descended upon the game. From a box sale perspective the game was a hit. Free to play occurred in 2006, after the TOO expansion (puke). And the game went on to live 3 more years closing in July of 2009.
Defining the 'who' this game caters to is actually an interesting discussion unto itself...simultaneously a fundamental strength and weakness of the game.
Crafter: IT CATERS TO ME!! Look at all the crafting stuff!!
Builder: NO TO ME!! Terraforming! Walls! I can build a kingdom!!
Carebear: *sigh* cant we all just get along? I want to explore and smell the flowers, tame bambi and live a life of peaceful introspection...mmmmmmmm...The combat system is barely developed, so this game can't be about pvp.
PVPr: Uh, i'm here to kill you. FFA World, promised tribal warfare, look at all these weapon and armor options...hmm, we can build walls, that must mean we will be able to rip them down. Sweet. it's obvious this game was built for me.
We're all seeing what we want to see in the sandbox...which is fantastic.
Hopefull the devs have the skill and energy to find a balance to cater to all the audience that is projecting themselves into the game...We'll see.
as a side note, from a market standpoint...the sbemu project at 1,623 'active' members registered on their forums (over 12k total, but bots and all that so that isn't a real number). For every one of those active members, there are probably 5-7 that they have access to (guilds, etc.)/ influence with. Thats a captive audience that currently has nothing worthwhile/satisfactory to play who is WAITING for the 'game' to be made. No, those are not WoW numbers, this is not wow.
Finally
Do you have any idea how much pvp groups LOVE dedicated craft people? City builders? Farmers? And i'm not talking about as prey, i'm talking about on their own side. If you ENJOY building cities and walls and terraforming and making the ultimate indestructible, unseigable fortress...that means we can leave it to you and go out and kill stuff....personally I have no interest in PvP. I'm not good at it. I don't get much enjoyment out of it. I'd rather build than destroy.
One of the misconceptions in this game, already, is the pvp and the craft elements are mutually exclusively...Your pvp tribes that are in it (hopefully) for the tribal warfare element will be just as skilled and focused on the craft element as anyone else in the game. It brings a competetive edge to have the absolute best stuff (once 'stuff' actually works ) possible.
You want all the raw materials you can get your hands on? You want tell the L337s what to do? get on board, and tell them you need x, y, and z ingredients in whatever quantities and THEN you'll be able to make them the legendary armor of uberdom. It's even better if ingredient z is only found on somebody elses land. You get to craft to your heart's content, pvprs get to kill people and take their stuff, win win. Hopefully the end result is that someone gets mad enough to come try to burn down your uber fortress (then you can laugh at their feeble skills from atop the walls you built).
If done right it will will all tie seamlessly together.