Which FP? You posted this in Help → FP2 but there have been 3 Fairphone products thus far.
FP3 has quite a few design differences where its shown they’ve learned from past mistakes. For example, the modules are more tightly connected with connectors. They’re a bit more difficult to get off, but the advantage is the connectors will fail less quickly. Also, the battery sits more tight, and is more difficult to remove.
If you’re looking for a thread with FP3 praises, here is one:
Community-maintained list of known issues which can potentially be mitigated by software update(s):