Photoshop: Straight line for Brush Tool (with consistent opacity/size)

It would be fantastic if there were a way to draw straight lines with the brush tool at any angle. Perhaps the pen pressure/size locks in on the firsts shift+click! 

Alternately a line straightening tool like in pro-create would be ideal (but more costly) 

The current Shift+Click tapers in one direction making it invisible shortly after the first point (when using pen pressure to control size/opacity) and the line tool does not offer the range of the brushes.

Thanks!