Will swinging help or destroy the relationship?

I'm currently in a quite long term relationship, and in general things are pretty well, I'm happy with the girl I'm with we've both been faithful to each other, but it's started to niggle on my mind, that most other women I've been with are all so much better in bed, don't get me wrong my current isn't bad, but it's always very plain, this is really starting to get to me now, and I've found myself thinking about my ex('s) alot more whilst 'on the job'.

Will swinging help or destroy the relationship? If there is any hint of the latter then the obvious answer is not to enter into it in the first place. Does she know and agree to swinging 100% without any reservations regarding the potent ional harm if you find that someone else is more exciting sexually. Also have you both discussed the apparent shortcomings with regard to what is happening at present within the relationship? What do you both want out of the swinging scene? Is it something for you, for her, or both?
However, if the relationship is weak to begin with then how do you both think swinging will be beneficial? and I mean both not just you. Lastly are you prepared for the fact that due to the already thin thread holding the whole thing together how will you both react if this is the catalyst that unglues the relationship completely? Surely food for thought here.

I really think that couples who get the most fun from swinger dating community have a strong and healthy loving relationship to start with, it is this fundamental structure that enables them to handle the whole swinging scene. This is certainly the case with the couples I have met, they appear to be well balanced and emotionally healthy.