Hey Tyarns - Deadlock's passing on maintaining his mods to me for future versions, so I'm handling the 0.17 changes - we'll be making our mods work together again :)
I have alpha versions posted in the forum thread that should have an early version of the API you'll be using to attach your tiers, so you should be able to start working to add support - you can see how it's used here https://github.com/shanemadden/factorio-deadlock-integrations/blob/master/prototypes/bob.lua.
Loaders can only move 60 items per second (engine limitation of 1 item per tick) so miniloaders will be needed to get the very high tier beltboxes to full speed, and I'll be adding an option for high volume stacking and unstacking recipes so that these insanely fast beltboxes don't bottleneck at 1 craft per tick (which your users will need to enable) but otherwise it should work well!
You discussed in the forum thread with Deadlock needing to adjust the "base" color of the loaders, which still needs added to the API - do you think it'd work better for your needs to have a tint option for the base layer, or a graphic file override option to provide your own base graphic, or both?