Sierro (the artist who drew the Beatrice scene), likes things big. I often have to request penis reduction surgery after seeing the initial sketch. I went back to check the details on that commission, and I did request an average sized dildo, but I didn't catch the fact that Sieroo made it fucking thicc, lol. And yeah, adding in different body sizes is a nightmare, and would greatly slow how fast I can commission art.
As for the portal method, I understand people wishing the town was more interesting to explore, thus making walking around to locations actually a thing worth doing. The game was initially set up in Twine (aka text-based), so you just clicked on the location you wanted to go to, which meant events on the way didn't need to happen. I've added some town events since, but mostly there's not much reason to wander around, hence the portals. Glad to hear you've been enjoying the game!
As fdiscodude said, there's a Minotaur enemy (the boss of the fourth dungeon), if you count that. Additionally, in the fifth dungeon you can encounter a wolf girl, and I'm pretty sure the fight is set up with a knotting mechanic where as soon as she gets it in, you instantly lose. But I don't know if you'd really consider a wolf girl to be beast content. There's definitely nothing that is straight up an animal. The Minotaur is as close as it gets.