That word you are looking for is "articulation" and of course it's part of traditional notation as is everything else, which is the point you are making.
Every second spent on this type of project should be spent practicing. Music notation is hard because theory is complicated and performance is nuanced.
People won't admit it... but we're all looking for shortcuts. Learn music the hard way. Or just be an amateur, but don't try to reinvent the kick-ass wheel we've been using for millennia.