Reputation ranks
Ranks only ever go up; points can drop but your rank stays.
About reputation ranksIt's a great mod that adds its own dimension that is full of content with cool boss fights that have their own interesting mechanics and gimmicks.
The progression system guides you to where you should go to next to unlock a biome and thus the structure with the bosses. You can opt out of the progression if you so desire.
Art-wise, it keeps up with Minecraft aesthetics for sure and I recommend the new textures if playing on more modern versions as it fits better.
The only downside is that it's currently unfinished as the Final Castle still lacks a boss and some of the structures do look outdated but the mod is very promising still.