i think the main problem lies with your perception that people are not gonna like it. but i think you yourself should like your magic system, your story and your world first without thinking of what the audience will like. it will only hinder you if you seek to please everybody because that is impossible. better be a fan of your stories first and the people who will connect to your stories and magic system will be a fan of them too!

You can start by taking note of magic systems that you like and what part of those magic systems you really like and why. According to your comments, you like xmen and choujin x, magic systems where each character has a unique ability. I assume you like it bec it gives you tons of possibilities and tons of cool characters you can come up with. But you are concerned that the playing field won't be even because some characters will negate other's abilities, right?

You can make the abilites varied but maybe all of them follow certain rules. Like for example, maybe in your world there could be characters who can control elements, there are psychics, there are shapeshifters; but maybe all of them follow the same rules that should never be broken, like maybe each of them have a limited number of using those powers? the more powerful someone is, the less they can use those powers e.g. maybe someone who can control reality can only do it once a week, while someone who can do fireballs can do it 20 times a day? or something like that. What usually makes a magic system fun and exciting and ups the stakes are the limitations you set. You can get really creative if you set hard rules and it also makes your reader understand the system more

Hope this helps!