I don't even know if it's possible to mod MP. That said, it's generally regarded as something that is not done. Players rightly fear the banhammer or other punishment from the developer. Yes, I do know that MEA is essentially dead, but it's still a risk. This is a multiplayer mod for example: https://www.nexusmods.com/masseffectandromeda/mods/539/? So yes it's possible and many sp mods affect mp. Let's be honest, people are using all kinds of cheats/mods in mp since the release and BW doesn't bother to ban anyone. I started to use them when i got tired of grinding and made myself hundreds of millions in afk mode (private lobby ofc), my acc is still fine. Maxing out all abilities won't really harm anyone and would make many classes much more enjoyable. I could try to do this myself if i knew where to look (and if it's not actually server-sided like credits).