Except the port of Squadwar from the old Coldfusion code to PHP on the FS2NetD server is already done
. It could be completely usable right now, if multiplayer were considered playable. The only feature missing is the direct integration with FSO and that is nearly complete. I mean, that's as much as X-wing vs TIE Fighter has and all it's taking is a GOG release to get people playing it on Game Ranger again.
And you seem to be ignoring the fact that we are talking about not one, not even two, but three total conversions with entirely different bases of interest, that could be released in the near future. Diaspora also suffered from a limited ship set in its initial launch. So it wasn't just the netcode, but it was a good chunk of it. TBP and FotG have much more options for campaign and mission designers, and FotG is part of a franchise with current real world interest. Getting multiplayer on that, making a viable replacement for the old Totally Games series, and giving players another reason to pick up TBP, are all worthwhile endeavors in my opinion. All of which would benefit from any kind of functional multiplayer system. I don't even mind throwing money at standalones to make it easier to host games. I mean I can almost always find a discounted one for about $1 a month on lowendbox.com. So you're right, I don't want to hear what you're saying, because while some of it is based on truth, the conclusions being drawn from it just aren't correct.
This is also a volunteer project, so devs are free to work on whatever things interest them, to a point. You can persuade and discourage all you want, but your tools of persuasion could use some work if your end goal is to prevent any further effort ever being spent on multiplayer.