The short CVD axle is made so there is no need for a precise position of the engine in line with the shaft above.
Mounting a pulley direct on the crankshaft will give a huge sidewards load on the engine bearings so that is no good idea either.

And yes, with no plug and heated up to about 85~90 degrees (operating temp on the track) it is much easier to turn the engine arround. The 1:3 pulley ratio will also help to make it a little bit easier for the window wiper motor.