How is High Precision in Op-amps based in BJT accomplished?
The solution to DC accuracy revolves around the differential input amplifier: -



In a nutshell the forward volt drops across each base-emitter junction cancel out and what is amplified is the difference between Vin+ and Vin- with no offset.

Bottom line is that only in exceptional cases will the discreet version be used; almost every application of this type is served by the ubiquitous op-amp.