I've made the comment before, so why not make it again. I think UNA will probably survive because (in my opinion) it's being supported by a large number of dating sites that are well established in the marketplace. I did a search some time ago and found that hundreds of dating sites were using Dolphin. My crystal ball suggests that the owner(s) of those sites wanted to take their sites to a new level and UNA came about as a result. Thus Dolphin was made redundant, as was Oxwall. Once the free Oxwall platform had all the bugs removed by hundreds, or possibly thousands of people who were beta testing the product without their knowledge, it just closed down.
There's a web site out there that can track the number of sites using a particular script, but I can't remember what that site is. If anyone knows, please tell me. When I ran the script about three years ago, it told me that around 800 dating sites, mostly in Russia, were using Dolphin. I'd love to run that script now to see how many people are actually using UNA and who those people are.
What interests me is the effort being put into UNA by Boonex and third-party developers despite UNA having an almost ZERO percent rating as a social networking script. Once again, my crystal ball tells me that the "public" version of UNA is nothing more that a beta testing script and the development is basically controlled by a conglomerate of UNA devotees running all those dating sites out there. That's what happened with Oxwall and in my opinion, Dolphin.
If I'm correct, Boonex is a "one-man-band" run by an Australian person living in country New South Wales. The site has a few contributors, but I'm guessing they're not on a salary. It really doesn't matter how big the staff is, or how they're paid, but Boonex isn't a big organization. If I recall, the directors are the owner and his family.
Dolphin was originally a script called aeDating, but the company decided to drop it because the dating market had transformed to the point where sales for the script were almost ziltch. Boonex acquired it, changed the name to Dolphin and made most of the script public domain. Thus it's now forked to Cheetah. When they dump it next year, Dolphin will become a thing of the past and UNA will become Boonex's only show-pony.
I'm guessing that the owner of Boonex and UNA makes enough money to survive and he'll continue with the product for long time. Whether UNA develops as a script you want, will depend on whether the dating site folk who actually support it want the same features you want.
Don't hold your breath!