Your stick and rudder skills will improve enormously . Lookout will be life dependent as you might join lots of other gliders in a thermal. Your judgement skills will be sharper in the circuit and landing. As you are flying closer to the stall you will have a healthy respect for the rudder and adverse yaw plus totally confident in recovering from spins. Compared with power flying I think you will be a much better seat of the pants handling aviator.
For those stuck on the winch or retrieve tractor remember this " even caterpillars become butterflies "