I've been slowly trying to use iD in place of Potlatch 2. (I'll get back to using JOSM when they allow scrolling when holding down the option key on Macs again.)
Here's a few observations now that I've spent some time with it. 1. It would be great if it had a "repeat last action" key like "r" in Potlatch. 2. I'm impressed that it supplies suggested feature types based on whether I've selected a node or a way. Potlatch (and JOSM) allow me to put node types (highway=turning_circle) on ways, leading to maplint. iD makes that mistake harder to accomplish. 3. I spend a lot of time changing highway=residential to highway=tertiary in the USA. At first, I expanded the "All tags" section and changed the highway type. However, a better way to do this is to select the way, click the "Residential way" box at the top of the list, then choose Road, followed by Tertiary Road. iD remembers this selection, and puts it at the top of the list next time. Nice. (Hint: even better if it had the repeat key from above). 4. I miss the ability to drag a way/area like Potlatch/JOSM can. It can be nice to see whether the highway has a center stripe. 5. I miss Potlatch's ability to "square" an area or "circle" an area. 6. I miss Potlatch's ability to "straighten" a way. 7. I like the JOSM like "dots" in the ways although JOSM seems easier to use. 8. It's probably better to have to force me to choose a node/way/area than to just start drawing.
What are your experiences?