I know that my experience with CASA may not mirror that of many on here, but I'm actually suitably impressed.
I decided that I'd make use of the holidays over Christmas and make a start on doing my RAAus to RPL conversion. Only organising my medical in late November, I figured that it would be better to just get a RAMPC medical vs Class 2, given that the expected processing time would make it unlikely that I'd get it before CASA closed for the break. Armed with the wad of paper that the RAMPC is, I managed to book into the DAME and saw him 27 Nov, last thing on the Friday arvo. Now, the DAME was only interested in doing a full Class 2, as it is easier to process straight through his computer, so that is what we ended up doing. To my relief, the medical was mailed to me on 3rd Dec.
I finished all of the required flying to convert to the 172, including a few flights to qualify for the CTA/CTR endorsements. With more paperwork in hand, I emailed the whole application to the licensing centre this Monday morning (18th), also posting the originals that same day. Well, to my surprise, the license was sitting in my mail box yesterday, with the covering letter dated 18 January. Same day processing! I know of another RPL application sent this week with similar turnaround. Maybe there are positive changes at CASA after all!