I do a lot of dirt bike work, some tools I'd recommend are,
-Motion pro T-handle that you can put the socket on
-self brake bleeder (basically a hose with a one way valve in it so it can't back flow)
-good digital micrometer
-flywheel pullers for whatever type of motorcycles you work on
-case splitter
-set of metric hex sockets
-torque wrench inch and foot lb one. About 10-250 inch lbs and 10-150 foot lbs.
-ratcheting wrenches
That's about all I can think of, but that stuff is more geared toward dirt bikes.