I hope the new platform doesn't require the latest browser. I am using an elderly Mac and cannot go beyond firefox 48.0.2. I also hope that quoting is better. I would be willing to be an 'early adopter'.
It totally makes sense to invite a few, test it out and grow it organically. It's going to be really interesting when it gets to a point of decising whjat to do with new members, as the "fair" thing to do is give more loyal members access first, but at the end of the day new members wouldnt have any experience of the current community deisgn so something better may come out of letting some of them in first too.