Hi, unless you need the Hard Drive space or prefer the colour I would not recommend changing.
The Elite cant output 1080/24p as the hardware is mainly unchanged from the predecessors. Similarly the Pioneers cant process 1080/60p.
You will not be able to 'view' anything per se in 1080p as the Pioneer is 768 vertical resolution.
I wouldnt let this bother you. I use the premium outputting 1080/60i over component & thanks to the Pioneers built in 3:2 processing, the image is equally as smooth as a 1080/24p signal over HDMI.
You already have an awesome set-up. I would leave it as is