3 SYNTHESIZERS >> SUB-MIXER >> TR-8 >> COMPRESSOR > stereo out

The reason for this setup lays behind the TR-8's scatter effects & sidechain options. My question is, if I am not losing something by running all instruments as "one pile" via TR-8 external input? Any recommendations or tips? any sound engineers using TR-8?
(I tried also putting RNLA compressor before TR-8, but then the drum kick and overall fatness was lost).