Chronic Logic

To have ships of different sizes that have to pass under the bridge would have loads of positive effects:
-it's one of the most obvious expansions for a game about bridges.
-it would be a nice way to make some levels more difficult (just preset one of , let's say,  3 different ships that have to pass under the bridge before you can start the train when you construct your level)
-it would make for more spectacular crashes ;-)
-for viewing pleasure, you'd also have to implement complete rotation into the engine (which I would ask for anyway :-)

Ummm... Texturing the bridges is a BIG no-no. Sky? Sure.

But if you toss a texture onto the bridge, that means that you're texturing thousands of polygons. Think about it... each SECTION of bridge has how many individual steel beams? It'd take a LOT of processing power to do something like that, and P-flex runs slow enough on the big levels as is.

Having said that, a simple texture on the sky couldn't hurt http://www.pontifex2.com/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>