There seems to be a gross misunderstanding of the pricing structure from companies on this matter by some forum members. Companies sell wayyyy fewer pre pros /multichannel amplifier separates than the corresponding receiver flagship. That is exactly the reason why there is such a price difference between the RX-A3080 receiver (2000 bucks) and the equivalent CX-A5200/Class AB MX-A5200 separates combo (2700+2900 =5600 bucks). There are other factors too. But, we'll leave it there for now.
The RX-A3080 is truly a badassmthrtrucking receiver and you don't need anything else. But, since you seem to like the idea of separates, I could try to offer you a more intelligent solution. You got some extra change and you wanna spend it? and you want to make your RX-A3080 even better? Okay, here you go. Buy this CLASS A behemoth badassmthrtrucking multichannel amp and plug it into the LCR preouts of the RX-A3080 receiver. It will add a crazy li'l sparkle and immediacy for you (something a MX-A5200 or monoprice or any common class AB amp out there simply can't). It's actually about 120W/channel into 8 ohms and 25ish watts in class A. But, for the amount of heat this thing puts out in the summer, be prepared to turn up the airconditioning or strip down to your underwear. In the winter, it would be perfect!
https://www.china-hifi-audio.com/en/jungson-audio-amplifier-cd-player-c-27/jungson-av-1000a-class-a-home-theater-8-ch-av-amplifier-p-1031?zenid=76fc2907c3697b7a9f3805af0f2411b7
You could also alternatively get 3 Class A monoblocks from these guys for the LCRs or whatever (many ways to do it these days). Keep in mind, these are the guys who actually make the amplifiers for the "highend" gluttonous snake oil pricing thieves here in the US or in Europe. When class A amps like these from China reach Western shores, a different name is given and the price tag becomes 30k or 50k such that a lazy low aptitude dumaz out here can pocket 27k for doing absolutely nothing.
Otherwise, you will not notice any difference in sound between the RX-A3080 and the CX 5200/MX A5200 combo.
P.S
The above mentioned class A amplifier recommendation is only if you're a music aficionado (primarily) and like multichannel music etc... or you wanna run a 2 channel/multi channel hybrid music system, etc and also use it a bit for movies. But, if you're just a regular movie guy (no taste in music) and just wanna hear a fckin dinosaur walking or....you wanna hear a machine gun shooting or if you wanna hear Tom Hanks squealin or something like that....you don't need that extra Class A crystallization. Unrefined movie guys with no taste in music don't deserve that level of refinement!!! Unrefined movie guys with no taste in music don't even deserve a Yamaha RX-A3080 in the first place.....Pyle should do the trick for these movie JimBobs .....bwaaahahahaha