In addition to what Jaymer is requesting on a combo box.
If there was a new property that let you call a process to show a popup that would be great.
When entering a new record it would still show the plus icon if the option was selected but if a value was selected then you had the option to call a popup to view the detail form of the selected value. The plus icon would become the search-plus icon.
It would also be nice if this option was available on a text box control as well, not just a combo box. Let say there is a total field and you want to call a popup query that shows the detail records that make up that total. I have several areas this would be very useful. That way you don't have to add another column on the form to show an Html button.
Another condition is when the list of items is too big for a combo box if you could click an icon to open a pick list to search and select a value for the attribute that would be great.
If the icon for a text box could be right-justified inside the control like it is for date field that would be great, and let you select which icon to display.
Currently, you can select an icon for the control but it puts it in the title. If you had the option to select a location, left or right, that would be good.
If this could all be managed from the properties on the control this would solve all these issues!