I can only reiterate the same frustrations that many, many other players have already expressed.
1) The new design is visually boring, as they’re just all the same medal style. We loved having the unique and interesting trophies you could understand at a glance.
2) The page is clunky and hard to navigate. I really wish we could see numbers instead of just percentages, and it's hard to understand which trophies we have. I'd love to be able to hover over to get more details about my progress.
3) A huge draw of the trophies was showing them off on your page, and as others have pointed out, it was a really cool insight into other players’ game style. You could see if someone was into collecting coats or companions, or bred a certain breed and had all the coats, or was focused on winning comps and rosettes. The new display is so bland and boring.
4) I am not even that serious of a trophy collector, but I feel so bad for those who are, and who lost so many trophies that they spent so much time and money curating. So many categories were wiped out, like the companions, the rays, all the different breeds, the GA coats, etc.
5) Do Iris coats even count for anything now? Am I missing it in the Collections? I was having fun trying to breed all the colors myself to get the trophy, but now even if it was a trophy it wouldn’t matter because I didn’t put a special coat item on?
6) Why can’t we see what the prize we’ve earned is, or what the next one is so we can work towards it? I don’t want Tarpan, so I’m just avoiding opening any of them. So the whole “reward” of the trophies is pointless for me.
The only good element:
1) I do like the idea of having an incentive of rewards for reaching new achievements, but as many have suggested this could’ve been added as a new bonus section in addition to the old trophies. I hope that the devs listen to the immense amount of feedback: reinstating the old trophies and then adding the new medals with rewards would be much better.