The same thing applies to Daily Chess. For example, I played a game against @axilrose, which I won. However, it only showed my rating change (849 + 113 = 962), but not my opponent’s (I had to infer that their rating change was -106 [840 - 734 = 106]).
Suggestions to Improve Live Chess
How are we going to ask the admins to show the old ratings of your opponent and their rating changes?

You could if you wanted to, easily see their exact rating change by looking in their archive to see what their rating was before they played you.
Im not sure of the benefit of having the opponents rating change displayed in the game console though. Can’t see that being of much interest to most players (unless I’m misunderstanding your idea).
I would also suggest that premoves should be 0.001 seconds or 0 seconds instead of 0.1 seconds.
If premoves were counted as 0.001 or 0 seconds, then in this game (see below) I wouldn’t have lost on time like I did, and I was no doubt winning the final position…
https://www.chess.com/game/live/18662468141
…and my opponent wouldn’t have gotten the 12 extra points in rating that my time forfeit gave. Instead, they would have lost 5 or 4 points in rating.

Kill Your Emotions.Learn rather than regret. If there's a BIG move against you, costing you an official, probably your favorite one....do not conclude your defeat play with the same energy through the end.
Watch Your Queen ALWAYS!. An important feature of this pattern is that the queen defends the rook while at the same time trapping the enemy king “in a box" BIG MOVE AGAINST YOU.
Finally 5 Wins in a row doesn't make you Pro automatically....
Kill Your Emotions.Learn rather than regret. If there's a BIG move against you, costing you an official, probably your favorite one....do not conclude your defeat play with the same energy through the end.
Watch Your Queen ALWAYS!. An important feature of this pattern is that the queen defends the rook while at the same time trapping the enemy king “in a box" BIG MOVE AGAINST YOU.
Finally 5 Wins in a row doesn't make you Pro automatically....
I don’t see how that would be a good suggestion.
You can post your suggestions that would really improve Live Chess here.
I will start off with one:
This doesn't matter in Variants, but in Live Chess. I would suggest that you show both players' old ratings and, in games that you play, your opponent's changes in rating.
In games you play, you would have to infer what your opponent's rating change was by remembering their old rating and looking at their new rating.
In other games, the only thing that you should see is their old ratings (if not shown in the chat).
For example, in a 3-Check chess game that I played, I had to infer that my opponent went down in rating by ten points (from 1132 to 1122). I suggest that you show the old ratings and, in games that you play, your opponent's change in rating too.