You and Moltenia both have points -- I often run into RPers totally unaware of what's going on in the forum here. Not all RPers visit these forums, in fact, it's probably only about 20% of RPers at most. (that's a random figure though, don't hold me to it)
At the same time, Moltenia, you already proposed to start a guild and it wasn't planned out very well... no offense, but it looks like this time it's also not planned out very well. Do you have anyone else you know on Sargeras who wants to help you run this? As I've tried to help foster the RP scene on Neltharion personally I can tell you that trying to get a guild up and running requires a lot of time and effort.
I'd also like to ask why you're darting off to Sargeras all of a sudden, instead of keeping with Neltharion as you originally planned... but that's kind of derailing, you can say if you want. You're always welcome to RP with us on Neltharion, we only started our guild because we hadn't heard from you in weeks, and one of the main reasons you tried to get a new one running in the first place was, as I recall, the inactive leadership. (;
If it's just for "casual RPers" as you seem to want to aim towards, you're probably better off using a chat channel rather than starting a guild which will be spread too thinly. (Eg. PvP + PvE + RP guild!!) Using a channel means anyone can join on their own and start up any random RP anytime!
It's really hard getting people out of their shells, as lots of people find RP intimidating. Which I understand is one of your major reasons for trying to start a more casual guild...
Anyway, 10x is pretty high already... it already takes less than a week for a frequent/seasoned player to get to level cap. (And you don't NEED level cap to start RPing as some people seem to think) Just sayin'. No need to split us all up again, I wouldn't be surprised if you didn't find many RPers on Sargeras.