The bulldozer/raise/lower tool works like that since several versions ...
Er?
I'm using 3481. When I start a game, click the bulldozer icon, click and hold the mouse and move the mouse with the left-button held down, nothing happens until I release the button, in which case it bulldozes the last tile I was over.
What I'm suggesting to happen would be like click-dragging a road, which allows you to build an entire line of road tiles - click first tile, drag to last tile, release; road is built. Bulldozer would: click first tile, more to last tile, release, and the line of tiles would be bulldozed. Are you saying that's supposed to happen? Can it be pak-dependent if so?
But I was also saying, even better would be to allow not only a line, but a box: unlike roads, which should be lines; bulldozing should allow a box of removal...
The up/down tools are very helpful as they are - dragging basically serves as a "level" function for the height; but still, it would be easier to use if you could click-drag like road - it's easy for the mouse to slip and to end up with expensive terrain modifications that are unwanted. :-) (i.e. the tool now operates live when you drag the mouse around; unlike dragging a road, where a preview is shown. It may be impractical to show a preview, but the idea would be to perhaps somehow highlight the tiles that are selected to be transformed by the tool, then do the transform when the mouse is released)
:shrug: As always, I make no demands or anything; just when I think I may not have expressed myself clearly, I want to make sure my idea is understood. If denied after that, that's okay. :-)