I have found dropdown columns to be way too limited. The “managed columns” is a step in the right direction but doesn’t offer any new functionality aside from using the same static dropdowns in multiple boards. Additionally, in the current state, the “delete label” is broken.
First, dynamic dropdowns. Dynamically populating a list helps keep options in sync with other systems. I’d request an option to use a formula that can reference other columns on the same board or columns on linked boards, or an API call that can fetch a list from outside Monday. Mirrored columns are close but you cannot import data into mirrored columns and since they’re mirrored they will change in both places if someone changes the value.
Second, cascading dropdowns, or dependent picklists. Being able to set up a hierarchy and the options in a second dropdown will filter based on what is selected in the first dropdown, and so on. I’ve explored several options to get this to work but ultimately gave up. There’s an app on the marketplace but it causes a side window to open and is very clunky. You can trigger a webhook to set a dropdown list, but it applies to all users on the entire board and only triggers when someone actually selects something in the first dropdown. This would lead to issues. Mirrored columns were the closest I got, but I cant import items into mirrored columns.
Third, the dropdown window is too narrow and most of the values are cut off. Either widen the window to match the column width or make it adjustable.