Motch,

That is the proverbial $64,000 question....I have 10 year recall rights so I have until Sept 2018 to return. Mind is pretty much made up to stay put with SWA -- I live in domicile, make great $ with a very financially stable company. The ONLY option that is remotely appealing is 777/787 FO out of SFO or LAX but that would mean commuting. The plus would be less days working for about the same $ I make now as a SWA FO. However, I am about 2 - 2.5 years away from upgrade where the $ will far surpass what I would make as a wide body FO at United. Also, I've never done the long haul wide body flying -- might love it, might hate it. But there is no going back. I have a very comfortable life now with the ability to just coast until retirement in 13.5 years.
Also, there is risk in the wide body flying that United does -- could the ME3 and others like Iceland Air and WOW crush them with a capacity war? Who knows but I do know that Southwest does not have to worry about competition from the ME3 poaching their domestic or even near-international flying. Could United shrink their wide body flying over the next decade due to competition from others?
So, long answer to an easy question -- 99% sure I am staying put.