I'm late to the party, but it's been a busy few weeks. Disclaimer applies - This is all meant to help.
YAY for not wanting to appeal to everyone! A generic profile with generic pics will get you dozens of contacts a week, but the odds of finding a match are no better than you'd get if you searched profiles yourself.
Keep the beard. Do it your way. If it rules people out, so be it. It could just as easily be bald heads, hairy bushes, 10 inch peckers, tattoos or a hairlip...everyone has things about them that turn people off and turn others on. We won't play with clean-shaven men because the Mrs. doesn't like the feel of 5 o'clock shadow on her girly bits...it ruins it for her. You rock the fuck out of what you have and like, because it's all going to be visible when the drawers hit the floor.
I don't like any of your pics except the main profile pic. The smiles in the main pic are awesome. That will draw people in. I'd lose the year-stamp, as we're about to go into 2020, with the caveat that you better show up looking like that. if not, take a new one. The rest aren't flattering, and unless you're in a poly relationship with mailboxes or motorcycles they also don't promote yourselves well.
Your tagline is generic. That's the second or third thing that catches a profile viewer's eye, depending on if it's a man or woman (Screen Name and Pic are the other two). It doesn't draw people in, but it doesn't chase them away either. You talk about humor being important, so put yours on display. Start with something funny! Plagarize if you must, but don't do it from local profiles.
There's a lot of generic elements scattered through the remainder, enough so it comes across bland overall. It's a shame because those are great smiles that probably have great senses of humor and a bunch of originality to go with them.
You'd probably serve yourselves well if you shared a bit more about his Bi side. Orally bi? Top? Bottom? Switch? Doesn't care who gives the blow job? Truly Curious? You're already ruling out a large section of the homophobic swinger world, but those that are bi would want to know more. Those that aren't homophobic but identify as straight will probably feel more comfortable if they know your preferences ahead of time. Hearing you respect boundaries is one thing, but some don't, so knowing what you're getting into may make it more comfortable for your playmates.
Pet peeve: The bit about "As with most guys..." is a huge turn-off for some. There's a fair amount of couples that AREN'T into watching the girls play, then the guys join in. Speak to your own personal preferences without making generalizations. You'll end up with a more inclusive feel to your profile.
Why is it a turn-off? Some couples that are seeking unicorns are really searching for a FFM or FMF experience, and they'll fuck the guy in a couple to get it. I don't want to feel like an afterthought, or the "guy I have to fuck to get to her". We've been in situations where , at one time or the other, we both felt like we were the one-being-taken-for-the-team and they're horrible experiences. Any hint of that and it's an automatic NO from us, even when we like your smiles and find you interesting.
The rest of the profile seems a bit disjointed, but has a lot of good elements in it. I agree that a word processor would help. This is going to sound hypocritical given the length of our profile (it's wordy on purpose), but I'd shorten it up a TON. Get it short, sweet, and to the point, then make it pop.
Looking forward to the next iteration!