For the record, there aren't really just 3 endings, there are a bunch of variables that influence victory ending b. I'm not certain how much the other victory or the corruption ending change, because I have only gotten the B variant while messing around, but they at least have differences in what epilogue scenes play. I've only seen Trademond and Roland variants of Victory B, but the details had significant differences. I mostly mention this because "opening all scenes" isn't really an option unless the person knows what they're doing and feels like digging through the game's code to see find exact triggers for specific versions of endings.
As for inconsistencies between RL Aura vs. Roya Aura, that's a post 1.0 project that has already had some work done on it from what I've read on the patreon. I don't see Aura's sexual corruption in Roya outpacing the curse's influence on Earth being an issue for a couple reasons. The main one is that the player is choosing to beeline Roya content if they're doing the bandit blowjob scene by day twenty. The other reasons are that 1.) On Earth Aura has her boyfriend, who she is loyal to, and being open to sexual activities is only one part of Alicia's plan to 'fix' Aura. 2.) On Roya Aura is doing things with her mana body(so she might not consider her actions in Roya to be real). 3.) Most of her sexual actions in Roya until very late game are done with the reasoning that they are done for the greater good of many people and/or they are done while Aura isn't fully in control of her mental faculties. 4.) Her initial curse causes Aura to need to vent her lust from time to time, but until she has lost some of her inhibitions George isn't really an option she'd be open to using.
My take on the curse is that the curse is fully reversed, but Aura's experiences while under the influence of the curse aren't. Also, most of her Roya based corruption wasn't directly caused by the curses, so it isn't undone once the curses were all lifted.
I agree that the best way to play is to treat this as a regular RPG rather than trying to rush h-events. I wouldn't mind seeing more of the lore explored, but that's not something you should expect soon. The developer has posted freely viewable plans that should cover the next couple years of activities as long as things go well. Right now development is being split between expanding side content and polishing Star Knightess Aura, and creating a shorter game that will be focused on a system similar to the soul contracts of this game. The few posts related to the new game sound pretty solid to me so far, but development in this early a stage is hard to judge.