I think that maybe the object of the game was to avoid sexual contact with the alien women as much as possible, because sex with them will kill you. Keep in mind that the alien women only take on the guise of beautiful human women to attract Larry, but underneath, they're probably scarier than the Gelgamek females who were mentioned in the SOUTH PARK episode "Red Hot Catholic Love." ("The Gelgamek vagina is three feet wide and filled with razor sharp teeth! Do really expect us to have sex with them?!") The LS8 alien women might be a cross between the Pukoids of SPACE QUEST 5 (who are really creepy) and the Amazons of SPACE QUEST 4 (who are really hot). Personally, the situation reminds me of a BEAVIS AND BUTTHEAD comic book where the protagonists are abducted by frog-like cloaked aliens, who then hand them over to green insect faced alien women with hot bodies. Sadly, when Beavis and Butthead tried to get laid with the women, the aliens kept trying to get rid of them, and they ended up in an escape pod in their underwear back to their hometown on Earth. Maybe the situation of LS8 could involve Larry trying to make it with the women, even though the women are willing, but happy accidents occur right before he's at the cusp of copulation, which of course saves his life from unbearable physical pain, agony, and gruesome death (even at the price of blue balls).
I think that if the main is for Larry to stay from the embraces of the aliens, there should be other females, who are not grotesque aliens underneath, to keep Larry interested. I suggest parodies of babes from well known (or little known) sci fi movies. The women could be based off of Persis Khambatta (who played Ilia in STAR TREK: THE MOTION PICTURE), Sigourney Weaver (from ALIEN), Lois Chiles (Holly Goodhead from MOONRAKER), Luciana Paluzzi (who was in THE GREEN SLIME, but was also in THUNDERBALL as Fiona Volpe), Carrie Fisher, Omella Muti (who played Princesss Aura in FLASH GORDON ), Mila Jovovich (FIFTH ELEMENT), Sean Young (DUNE), Vivica A. Fox (INDEPENDENCE DAY), Mila Avital (STARGATE), and perhaps Marina Sirtis and Gates McFadden (Troi and Dr. Crusher from STAR TREK: THE NEXT GENERATION). They could be members of a special task force meant to make sure that the female aliens don't mate with Larry, since that would produce offspring that would be disasterous for the Earth: ALIEN LOUNGE LIZARDS!!!!
By the way, how was Captain Thygh supposed to figure into this game? I orginally thought that the object of the game would be for Larry to have to save her from alien forces for breeding purposes. Would it be better to just to bring back the babes from LARRY 7, with maybe cameos from LARRY 1 and 3 (such as bringing back Eve and Patti), or would it be better to have new women, and maybe keep one or two women from LARRY 7. I was thinking that Dewmi More should appear again, where it turns out that she's one of the female aliens, or the female alien has taken her as a host body. Whatever the case, I think Captain Thygh should kidnapped by the aliens, and have it be Larry's goal to save her as well as save the Earth.
If someone were able to develop LARRY 8 as an indie adventure, perhaps the engine for THE SILVER LINING could be used to make it? Or maybe a engine made from scratch based upon the crude 3D tech demo teaser for the game?