I guess it's a matter of personal taste. I routed my crankcase breather tube into what is called a catch can...didn't want stuff dripping all over. Did this when I replaced the factory air box with a K&N cone filter.
Here is a link to a thread I started a while back about this....there are pictures linked to that thread, with a short caption under each. Also a couple of pics in my profile...click on my user name....and then on album titled "My Stuff"
http://scootdawg.net/showthread.php?t=54327
An oil cooler would be nice...both of my BMW's have them, but don't know it the tiny, weak oil pumps in our scooters could handle feeding one. I've seen kits offered, and heard of people buying them....but never read a follow up story of how things worked out.