What bothers me most is the fact that the people that didn't us their pre-order discount (which only applied to owners of Trinity and owners of the original game plus the other expansions) keep complaining that they don't get to have a discount anymore.
Pre-ordering what will be a widely-available product months in advance makes little sense as a general rule. If you're retaining someone to sculpt a monument or paint a picture that's different. In this case, there isn't even a risk that the product will only be available in short supply, reducing the need for reservations. (It's not like they're going to run out of downloads.)
From my perspective, I didn't want to commit $30 several months in advance for a product that may or may not have anyone playing it in online multiplayer. I've been burned before with sequels and I like to hear other people's feedback first. If the online multiplayer PvP crowd concludes that Rebellion is bad (bug-filled, inferior game play compared to Diplomacy, etc.) and returns to playing Diplomacy then I wouldn't want to spend much money on it.
What we're complaining about is having to pay to re-purchase intellectual property content we already own. It's basically going to be the same game as Diplomacy--same engine, same user interface, etc.--with some added features as opposed to being a bona fide Sins-2 with an improved engine and multithreading. So, it's a little bothersome that you have to pay to repurchase content you already own for the same price as someone who has never before owned a Sins game.
I'll probably end up buying it for $40 or at the earliest sale if I read good reviews from players I trust and if I hear reports about high online player counts. If it's as good as Diplomacy and has higher player counts (300-500 people online at once) I won't feel badly about spending the $40.