Currently I'm running a 1920x1200 monitor and it seems that the HUD is based on 16:9 screens because I can't increase the vertical position past 1080. Does anyone know a way to increase the positioning instead of the arbitrary limit already set in place?

Maybe this helps: (Can't post link to source, so I do copy/paste )

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I've found a way to adjust the HUD beyond the 16:9 resolution:

In user.settings at Documents/The Witcher3 the uiVerticalFrameScale and uiHorizontalFrameScale can be modified. Make sure to set the file to read-only afterwards!

Here's the regular UIHorizontalScale 1 limit versus 1.3 set manually at 2560x1080
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Maybe changing uiVerticalFrameScale value, you can adapt the HUD to 1920x1200

source: wsgf.org/forums