Having read so many novels it's quite boring to see the same type of power-system repeat over and over again. I'm trying to find a novel that is filled with multiple power-systems so different characters have different specialties beyond wind, water, fire, light, darkness, etc. Constricting yourself to a few power-systems is quite boring so it would be fun to read a novel with multiple kinds of ways to get stronger. A novel full of cliffhangers is just a fun bonus as well.
you can try litrpg or super hero abilities novel where everyone has different powers The Wandering Inn Azarinth Healer Kingdom's Bloodline
If you want a novel with many power systems, you could try The Good-for-nothing Seventh Young Lady, it's a bit long, but the MC will try every power system...