I'm just "basic" Leader Club (prior experience had made me skeptical of their ability to deliver, so I didn't want to invest until I had a basis for thinking it was sound), and have had fairly poor recognition. I had a lengthy correspondence with LC after about 3 failures to get anything, which culminated earlier this year in their complaining to one of the hotels, which claimed I'd indeed been upgraded because the park view room with balcony I'd reserved was actually 2 meters smaller than the room with park view out of a very small window if you stood on the chair to look out of and without any balcony I'd been given, and the amenity they shipped to me after my stay (never explained why they couldn't get it to me in 4 days there) was held up in customs (I did receive an amenity some four months after my stay). My most recent LHW stay, which included a special request from them because of snarls with the reservation and my honored status as an LC member, did not produce an upgrade even though the hotel was half empty.
I just don't think you can count on anything from this program.