Those who have the Ender3v3 plus know the filament location is garbage. I've seen a few takes on solving this and here's mine. It's fairly complicated and involves drilling and tapping into your machine so it's not for everyone. I am also not gonna put all the exact dimensions and everything mainly because I don't remember and don't wanna go back and measure. But if there enough interest I will come back and update everything.

First relocating the spool holder, if you look at the top bar on the right side; you will notice there are 2 little thickened pads of metal. Those are for the spool holder, it's like they had a good idea and decided not to do it. I measured the spacing of the original hardware copied it to the upper bar, made sure it lined up, then drilled and tapped it. Now the factory spool holder fits on the factory spool holder hardware. Good. Great. Moving on.

Relocating the filament runout sensor, look...to be honest while I was designing this I zip tied the runout sensor to the side, stuck a piece of filament in it and let it roll. You CAN circumvent the sensor IF you want to. But here's what I ultimately did. Found a print online for something similar, found out it doesn't fit at all. Then redesigned it, but one part I used was unaltered. So though I'm not counting this as a remix I will give them credit, though I had to search for it bc I forgot where I even found it, but "Embrace Making" made the model I took inspiration from, here's the link. https://makerworld.com/en/models/428902

The sensor holder I made utilizes the factory bolt holes and also meshes nicely with the curves, I wanted to make it where I can add a light bar or something in the future, I would have space. Now I do. I used 3mm bolt idr what length, 2 for the frame mount and 1 to connect the filament mount to.

Lastly is the most unnecessarily complex part the filament roller. At this point you may notice the spool hangs a bit low and bumps into the sensor. Not wanting to drop the sensor any lower and mess up the printing area I decided that if I could pick the spool up a few mm it would work. So this design replaces the factory spool holder arm thingy. This print slots right in like factory. It also has a 7mm steel key stock inside of it to give it strength and rides on 2 way-too-heavy-duty bearings. These are just things I had laying around and are by no means necessary but the dimensions are what they are based off these parts. If there is interest I will go measure the bearings but you can get the dimensions off of the files.

All in all it works well, does what I need it to, and is better than before. IF I get a lot of questions I can edit and update this post, but for now that's all. Byyyyeeeee.