Congratulations! You have done great work...far greater in fact than at least one other fan project I might name...
You deserve the highest praise for actually taking the time and effort involved to finish your work! Believe me when I say that this sort of VN has been a long time coming.
And...maybe...just maybe your FINISHED work maybe just the poke in the eye those worthless procrastinating otaku bums of that site need to wake up from their collective comas and finish up their own Slider venued VN now without going through another 5+ years filled with more procrastinating lies than meaningful updates!
They are a few of quality dwelling in the shadows of that lonely forgotten site who patiently await the rebirth of a hero of your protagonist's potential...You are the long awaited champion prophecy foretold...so eh-...march on to finish this for all of us who have waited patiently for a Slider-centric story. Prod them in their backsides with sharp pointy narrative sticks in their eye sockets as soon as you become the undisputed Slider weight Champion of the Haruhian crossover-esque world! Here's the link how:
Shock-jab them back to life for all of us! Shame them with the light of your awesome artwork, scripting, editing, and writing Slider powers! I don't mind helping! I have a lot of ideas for story, background, world-building, plot, you name it! I'm not so good at artistry and don't have any direct experience but I'm willing to help out if you want to get involved with this!
Anywhoo, that craziness about procrastinating otaku and their zombiefied fan project aside, I very much love the bright light hearted tone of its art and characters of YOUR VN. The little I've seen of it so far is very good. I especially like the fact that you offered the option for your protagonist to actually be a lot more Sanguine in personality to round out the others in the SOS Brigade (yes, even Haruhi herself who wears it like a mask to color her Choleric nature). The goodnatured Sanguine idealist Slider spirit character always felt like it was missing from the show canon cast. A hole now after many years finally filled to the tune of vocaloid.
So many thanks to you for creating this VN. I eagerly look forward to you crossing the finish line and releasing it to us! In the meantime, best of luck on all the spit and polishing going on behind the scenes now and remember that we are all cheering for you on the sidelines for the moment you win the race!