Hey there, thanks for taking the time to formulate your experience for us. It helps a lot to see what issues players are contending with so we can do our best to fix them.
So the first thing about your experience in the pre-alpha so far is the two major sticking points - retirement screen and the lust bomb system - both of these will no longer be in the game going forward from v016 onwards. Instead of the retirement screen, we will have an open-world submission system based on what regional towers you've unlocked, this means you can submit monpedia/quest/bounty photos way more frequently and with zero loading screens. With the lust bomb system, the issue is how the old sex system worked, which means in v016 there is a new sex system instead.
To iterate more on the lag issue you've been experiencing we believe it is tied to the number of actors on screen during v015 and we have begun to take measures into how we can best display the number of characters on screen that we want but keep lag to a minimum. This includes things like making sure the system is not spawning and unspawning girls all the time, and making better use of the characters currently in view. Stuff like that. All growing pains.
As for the blowjob scene, that was indeed a promotional video made to help advertise the game, but good news, v016 will feature 8 new solo animations, 12 new pair animations, and 6 new threesome animations. Unlike the current doll system, these are what we would consider premium animation sets made to be very sexual and appealing. Here is an example of a still from the new system...
Hope that answers your questions! We are hard at work getting v016 ready, and I hope by next week we will be good to launch. Time will tell though...