I am using CMOS logic gates/counters etc in a lot of designs but I always need to add extra circuitry for buffering the outputs (normally just a transistor and some resistors).
Are there any drop in replacements that have buffered outputs?
Not really. Some products feature "buffered" outputs, but that doesn't mean they are going to drive your devices. Logic was never intended to drive relays, actuators, etc, so buffering will normally be required.