This is just an idle curiosity question from my end. Was there a specific reason for creating the new graphics instead of forking/updating the original Bulk Rail Loader mod?

Two reasons: the old loader mod was using a repurposed chest from another mod as a loader, which looks nothing like an actual silo rail loader. (see this image for a real rail loader: https://i.imgur.com/MjH9SzA.png)
Also it would require me to use the specific software license/rules from the original mod which I don't necessarily want to do, at least not yet

I could potentially make a fork in the future that uses the old graphic if there's enough demand

Thank you for humoring my curiosity. I am looking forward to the mods development.

Hurricane seem to be working on a Factorio-ish train loader graphic and has a great animation. This is the only train loader mod I found so I guess he made it specific for this : P. All of his graphic are CC BY so I guess you could try to use that. Current utilitarianism train loading silo version is still fine though.

https://www.figma.com/proto/y1IQG08ZG2jIeJ5sTyF4MP/Factorio-Buildings?node-id=2585-1158&node-type=frame&t=tk88gXWNIga60zMr-0&scaling=scale-down-width&content-scaling=fixed&page-id=0%3A1&starting-point-node-id=2585%3A1158&hotspot-hints=0&hide-ui=1

Hurricane did make that graphic for me, I will be updating the mod pretty soon to use the new sprite

Oh I'm not seeing it being discussed anywhere. Very cool of him.

Just uploaded an update with Hurricane's new sprite (if you don't have stubby mode enabled). Give it a try and let me know what you think

the stubby mode graphic is coming soon™