If you're new to modding, I suggest making a mod that adds new ores, weapons, and maybe even blocks. This would be simple to do, and it doesn't take that long.
When you're more experienced at modding (or if you already are), you should add a special twist to your mods like maybe a new concept, dimension, and other cool stuff that make your mod unique! Remember to keep on practicing, you'll get better. ;)
And with that out of the way, here are some ideas that would be interesting:
New dimension, mobs, & blocks
New ore, armor, and tools
New concept that makes the game more fun (like guns, wands, devices)
New mechanics (like more weather, or a custom hunger bar)
If you're new to modding, I suggest making a mod that adds new ores, weapons, and maybe even blocks. This would be simple to do, and it doesn't take that long.
When you're more experienced at modding (or if you already are), you should add a special twist to your mods like maybe a new concept, dimension, and other cool stuff that make your mod unique! Remember to keep on practicing, you'll get better. ;)
And with that out of the way, here are some ideas that would be interesting: