Thats not the hugest problem to me, because I wanted to learn about bytecode-manipulation anyways, but it would really take a while 'til I am able to create a "good" coremod, true.
I this particular case of course, but the thing is, I'm trying to create an "own client like" mod, that changes many behaviors of the normal client.
Before I did this kind of thing with MCP directly, but this time I want a mod, because I want it to be compatible with other mods I use.
This is one of my first mods with forge, so I am not really familiar with the whole Forge API, but I'm definetely going to try using the event system and for now probably not a coremod.