Sadly, all operators in the area use identical equipment, so finding pieces of shrapn
At least it could lead to identifying the source of the high speed fragments. That would limit the number of source type probably to a BUk missile. Despite having the same name, being in production for such a long time, different variants, batches etcetera exist, and if lucky, this will further differentiate the source.
Further intelligence would lead to the launch location. The US already has this data, so that would be easier to zoom in on the who.
The US track record on launches is good, they were the first to say that SIberian Airlines 1812 was shot down by a missile, and also the launch of the iskander missile that killed Stan Storiman was detected by the US according to Jeroen akkermans. So I do have trust in this
The identification of the fragments is a first step in nailing the responisible people for this tragedy.