What would the considerable change be? What would the bigger implications be? No seriously, tell us, because so far you have not offered anything but vague statements.
From a game design perspective:
You probably noticed that the game constantly asks you (the player, not the character) to provide a reason for the character’s actions. There are also moments when you (the player) have to make decisions (all RP options lead to something final) or provide a reason for your character’s actions. The game also lets the player (not the character) know that maybe something is not the best decision.
From a game design perspective, this conversation with Astarion is the game asking the player “Hey, so you’ve been playing this game for quite some time, romanced this pixel character, and did something that was flagged as a big action. This is the final beat for his entire arc and for this romance. Why did you do it? What’s the angle here?” You (the player) are asking the game to be able the say “no reason”.
You are asking the game to prolong a limbo dynamic for your character and not fully close the romance. Which is fine. But clearly, the ascension is flagged as an evil event (probably the highest body count event btw) and you want to add a “neutral” flag. If there is a neutral flag here, it’s only logical to add neutral flags throughout the game for other big, high-stakes moments, which are flagged as an evil act.
