ME1 isn’t perfect but I like the innocence and naivety in the game. After a while, you’re kinda unfazed by some stuff - but here the crew is seeing the Citadel for the very first time and they’re all in awe of it. That kind of awe - I think it transfers to the player as well, because the scale of the Citadel in ME1 is quite impressive.
In later games, Shepard being a Spectre isn’t a big deal. In fact, it’s put in the background. In ME1, you’re the very first human Spectre and it’s a HUGE accomplishment. Everyone comes out to see you!
How many times have we gone through a mass relay or do something crazy because Joker is so good at it? But here he takes us step by step as the Normandy goes through its first mass relay trip, and he tells us how difficult it can be to do this.
I don’t know, just for those beginnings, and the joy you get from it, ME1 is worth playing again. There’s a sense of pride there. And it’s not just that, of course. The game has its charms, and knows how to play with the atmosphere (to me, it has a retro sci-fi vibe, which is perfect for Feros, Noveria, etc).
And of course, there is Shepard themselves and all those quests we’re on. Half of those quests, I’m like “really???? really???” but this is like the beginning of a long tradition where you just know, if Shepard is in the Citadel, at some point they’re going to drop by someone like “HERE IS THAT THING YOU TALKED ABOUT IN A PRIVATE CONVERSATION TWO WEEKS AGO. Knew you needed it, see ya!” while the person is just “O___O wait what?!”