cyclezen

With consideration for which model year your Allez Sport is - if it has RIM brakes and Quick release, it really seems buying a higher level wheelset which won;t travel up to a higher level bike/frame (Thru Axles and Disc) would be a dead end upgrade. If expense is not an issue, fine.
But as others noted, nice tires will have a nice effect on the ride quality. Of course, everything depends on the motor...
The Allez is a really great bike design ! Certainly equal to many bikes which might be pricier (components aside ...)
I love good wheels, but also love nice tires. Something to look forward to.
Depending how much you ride, a new chain might also provide a nice boost.
WHen I get the urge to spend bike (and know it's not really gonna help any...) I'll buy another, cool jersey or Bibs/shorts, or maybe helmet... I never regret those buys, they always get well used... LOL!
Ride the Bike, Ride the Bike, Ride the Bike - Eddy...

Ride On
Yuri