>>714410283
Two mods I highly recommend are Kerbal engineer and Trajectories.
The first one gives you a lot more information on your ship, and you can choose what type of info depending on your playstyle.
The second one gives you the future trajectory of you ship in the atmosphere. Both should be vanilla imo.
It's a great game that I love very much. The replayability is insane, I have 1.5k hours in it, mostly sandbox.
SSTOs, reusables, planes in general, interplanetary ships, rovers, landers, helicopters, satellites and constellations, all the cool scientific concepts you learn over time, mass and fuel optimization, etc etc
The few major flaws, to me are the performance that could be better, the janky build system and the lack of potential logistics you could have with all your vehicles. Both science and money are too easy to farm and the fun of discovery slowly disappears. I know I'm a faggot for complaining about a game past 300+hours but I would have loved a true vanilla endgame.
Use a delta-v map, please. You don't need to suffer. Also look into Kitten Space agency, looks promising after the ksp2 debacle.