The drop rates in your chests and all the associated multipliers that go with them would stay the same, but being that the staked SPS multiplier is applied to your RP, you'd likely be earning a lot less chests. It's kind of like playing under leveled or starter cards and incurring the penalty for those. Same type of mechanic, alternatively named penalty.
As far as comparing ranked SPS earnings between Silver with a massive stake and Gold or Diamond with a 1x multiplier, I have a reply on here to someone else talking a little about that.
https://peakd.com/splinterlands/@squishna/re-splinterlands-rxa4lx
Oh, so for casual players, they now have penalties for #1 using starter, #2 using underleveled cards #3 low sps.
I was actually excited about "Hey I can get higher than gold now without being flood gated by SPS Stake"
While this is true, unless you increase staked SPS, it's like being in Diamond only by name but earning like a bronze player (or worse). This is way worse than I originally understood. Thanks for opening my eyes. !LUV !PIZZA
(1/1) sent you LUV. | tools | discord | community | HiveWiki | <>< daily@torran, @konaqua
! help(no space) to get help on Hive. InfoNo problem! Also keep in mind though, this seems like it's going to affect quite a few people in Gold/Diamond/Champ, so with less people playing in those leagues, the SPS rewards for ranked play might increase. In that case, you might want to look into renting some SPS. I'm not sure what the current prices are, but I've heard it's fairly cheap. For now.
Thanks for the tokens!
!BEER