By default, new connection lines that you drag between cards use different colors (types). Pro users might know that you can hold shift or set a default type to use the same connection type across cards.
But now there’s a user setting that flips that:
User 
Settings Controls Use last connection type
When enabled, dragging to create new cards uses the … last connection type/color you used or clicked on. Basically the same thing that would happen when you shift dragged. (Shift dragging when enabled does the default behavior of creating a new connection type/color).
What do you think? It’s live now and I’m living with it a bit and seeing what other ppl think before marketing it