Things I liked:
- Again, I love history and am biased towards this series and RAT, so the historical settings that always open these books with stylized art suited for the time periods are a genuine thrill and open each book on an exciting note, and that is the case here with Rodan protecting the Mayans from the Spanish Conquistadors.
- Related to the above, the twist of Aaron Burr being revealed as a Xilien (and the GFW incarnation, the first time seen in any of the books).
- This may be one of KG’s better appearances in these comics next to HCW & Rivals VS: King Ghidorah. KG not only looks great (though again, why does it *always* have to be the Heisei incarnation instead of Showa?
), but is also properly depicted as he should be: Godzilla’s #1 arch enemy and most powerful foe. 
- While a bit brief, the battle between King Ghidorah and Godzilla/Rodan/Hedorah/Mothra was extremely fun and entertaining. This is how battles should be depicted in these comics!
Inaki Miranda and Frank Tieri are really adept at crafting great kaiju battles, such as Godzilla vs Ebirah/Oodako in HTBD. The writer/artists of the recent disappointing MG vs KG could have taken a lesson from this. 
No real negatives nor things I "disliked". I guess it would have been nice to see the likes of Anguirus, Gorosaurus, or even Orga as they haven't been utilized much in this second run of IDW comics, but this is just a general nitpick and not directed towards SOG. However, similar to HTDB #4, there are quite a few story threads that need to be wrapped up rather quickly in SOG #5, which is a concern. To Tiere and Miranda's credit, they managed to pull this off perfectly in HTBD#5, so hopefully they will be able to do it off again.
Great stuff as usual, as HTBD and SOG along with HCW have set the standard and benchmark to what other G comics/ongoings/minis should strive to achieve.
However, I see some sad parallels between this mini wrapping up & Rage Across Time in 2016. RAT was a fantastic mini that unfortunately was overshadowed by the atrocious Oblivion. Shortly thereafter, there was a long 4 year hiatus of G comics. SOG is leaps and bounds above MMPR II, Rivals VS Rd 4, Skate or Die (I’m sure some will do the usual devil’s advocate spiel and attempt to argue in favor of some of above…but it’s really no contest). With Rivals VS soon coming to an end (and going out on a whimper sadly), no new series nor One-Shots announced (the lack of a KG 60th Anniversary One-shot is very telling), and nearly all G comics aside from a few select issues suddenly being removed from the IDW Online Shop, I think we may be nearing the end of this latest run of G comics once SOG and Monsterpiece Theatre wrap up. Honestly, it might be for the best to let another company take a crack at Godzilla (there has been some very good stuff from time to time from IDW, but far too many misfires and inconsistency as well)....
) 
).
Seems more of the same from numerous recent IDW comics as this is the well they often seem to turn to post-2020. Not being a downer as this still sounds neat and I fully trust Tiere to deliver the goods, but Gigan and even SG (no favorite of mine) would be more exciting/intriguing to see at this point (though I bet they'll probably show up eventually). 
Love that they're referring back to Benjamin Franklin's secret lab from SOG, as there was some intriguing easter eggs there (Could Mecha-KG show up?)...
