I was hardware lead on a system that was the 2013 revision to an existing ISA-bus blade PC architecture. We threw it all out and switched to an off-the-shelf DI

I was hardware lead on a system that was the 2013 revision to an existing ISA-bus blade PC architecture. We threw it all out and switched to an off-the-shelf DIN rail PC from Beckhoff with snap-on EtherCAT modules. It took a little extra development time but it was 100% worth it. Sometimes you gotta throw it out.