What's your unit SOP? We're issued
this plate carrier but I have seen pogs walking around with interceptors (mostly during some moto pt).
Stay away from anything too bulky, it'll just get annoying and expensive. I threw on my own hsgi tacos and that's really it. As for the KDH carrier being terrible, that may be true but I secure my cummerbund with zip ties and tighten everything up tremendously. I'm a pretty big dude standing 6'2 but it seems to fit quite snug and I retain a lot of freedom.
Obviously it's The Corps and we won't get the best but I haven't seen much reason to complain.