Speaking or organization, does the current alpha feel "OK" in terms of where items are placed / sorted in the UI?
Yes I have. The building items and scenery item UI's is a mess in silence. Themed decoration objects are random mixed up between scenery and Buildings depending on what pirate scenery you developers seems to like to integrate with Buildings. Although all pirate scenery are in a Think-outside-the-box context possible to combine with Buildings. They should be consequent a scenery item or building item sorted together in one section. Makes it really hard to find all pieces today.
In the building wall section, there is a ton of objects that consequently should been placed in another section because they are not wall and does not act like walls. Similar acting items exist in the extra section for pillars and stuff. Please put them consequently there.
And last, there is related signs that are splitted up between scenery signs and building signs that should be sorted together. The small version can be in one section and the big version in the other. It is very notable the signs for buildings attaches to walls and the scenery signs are freely placed on ground and that all non wall-attached signs in the building wall section should be moved to the scenery sign section.
I've made at least 2 threads about this in the feedback forum earlier this year. Like talking to deaf eared people in that forum section sadly when wanting do discuss UI and comprehensive sorting.