First of all, many thanks to ho1od for your efforts.
I just made a dump with the files using Wave_Remaker_NEW_2_0_7_4 and 0_2_8.
No changes, simply saved them again:
PFS_S8600_Open_Europe_Common_XXLA1.pfs is 3.654.656 bytes large
PFS_S8600_Open_Europe_Common_XXLA1_new.pfs is 3.654.656 bytes large
ShpApp_HD.app is 81.445.888 bytes large
ShpApp_HD_new.app is 81.445.888 bytes large
The new ShpApp and PFS are flashable on the Wave 3.
CSC_S8600_DBTLB1.csc is 40.821.764 bytes
CSC_S8600_DBTLB1_new.csc is 48.423.940 bytes
The new CSC is almolst 8 Mbytes larger.
Rsrc_S8600_Open_Europe_Common.rc1 is 40.371.200 Bytes
Rsrc_S8600_Open_Europe_Common_new.rc1 is 50.594.816 Bytes
The new Rsrc is more than 10 Mbytes larger.
It's not possible to flash the new CSC and Rsrc on the Wave 3.
Another test for the FactoryFs_S8600_Open_Europe_Common.ffs from the S8600XXKJC_OXA:
FactoryFs_S8600_Open_Europe_Common.ffs is 53.871.616 Bytes
FactoryFs_S8600_Open_Europe_Common_new.ffs is 53.888.000 Bytes
Compared to WInHex, 49.972.662 Bytes are not identical.
I hope you go on exploring and wish you good luck.
Again, ho1od, thanks a lot for your efforts.