Hey there, Pete.
Let me see if I can help. *I'm going to intentionally over-simplify my response to keep it brief.*
In your studies you probably learned there are two main reasons for modifying a track, like your vocals within a mix. There are the type of modifications so the track fits in the mix and doesn't get buried or bury any other tracks.
There is also modifying tracks for effect--just to enhance the sound or make your own unique sound, etc.
Neither of these techniques are mutually exclusive--you can do both. Both use many of the same tools, like EQ, compression, even saturation (distortion), reverb and/or delay.
I recorded and mixed for over 30 years as being self-taught before I did what you're doing with studying not only the how, but the why you do things in a mix.
I think the best way you're going to get the answer from this forum that you're looking for, is if we know why you're wanting your vocal to be thicker. Is it because it gets lost in the mix, is it because you want the vocals to pop, or is it because when you listen to pro mixes you like, yours doesn't sound like theirs?
The reason we need to know this, is because there is always give and take when you start modifying a track. If you merely add something to your vocal track, you may take away from another track that might be sharing the same EQ space, etc.
Your routing sounds pretty cool, and I'd like to try it, but I can't emphasize enough, that if you want to improve your craft and end up being pretty darn good at it, you need to ask yourself, "why" you are doing what you're doing to your (vocal or?) track. That will help you make sure you only make those modifications that will do what you want (improve the track), with the least amount of taking away from another track, or the overall project.
This is my .02. There are a lot of really excellent and experienced members in this forum that can help as well, but I wanted to give you a tip that I think will not only help this track you're working on, but build your ear and craft at the same time.
Cheers,