Hello, boss!
This isn't entirely my own idea — I saw it in another mod and thought it would be cool to implement here.
The main inconvenience is switching the inclined pipe function, since you always have to open the panel, then the corresponding tab, and then click the "inclined pipe" menu item. An additional option that would work great is a shortcut available when entering pipe-building mode, right where all the other pipe-building settings are. In general, you could put shortcuts there for all functions (underground pipes, deconstruction, labels, inclined pipes).
If you happen to get excited about this idea and decide to implement it, I'd ask that you somehow ensure compatibility with the "UndergroundPipes" mod, perhaps following the example of how it's done with infinite water and oil for the "PlaceResourceMod" mod.
