So he seemed an easy skip by many including me. However, I did get him eventually, and I think he's pretty great and I am quite happy to have him as part of my collection. I took images below, to share with you what I see in this toy and to give you an idea of all he has to offer.
Firstly, while he is a redeco of Combiner Wars Hot Spot with a new head, I feel he owns this mold and has as much right to it as Hot Spot did. Neither of them ever had a firetruck mode in G1 resembling what they have here, which is vague enough to also be considered Cybertronian if you wanted it (it's as Cybertronian as any other alt mode in the upcoming Siege line). And with design nods to both the RID Hino firetruck and Sentinel Prime's airport firetruck, red really suits the alt mode. I much prefer the fully white ladder.
What I like best is just how different the paint scheme is. Different parts are highlighted with paint to give him a very different look. Like the little black rectangles on the shoulders with a bit of red plastic within it. Same with the alt mode where we get some nice silver on the ladder area which was unpainted on Hot Spot. Plus the combiner head has extra paint on the helmet.
As for the Power of the Primes gimmick integration, I am impressed with how creative they went to find compatibility. Instead of the the combiner legs being gauntlets, they are turned into a back pack of sorts to allow Inferno to have shoulder mounted guns. And they are stored just as well in vehicle mode as compared to any other voyager in the line (I would even say those feet look better mounted on the firetruck than on any other voyager alt mode).
Inferno fits really well with a classics G1 crew and even works in a lost light crew (that would also include Hot Spot).
The colours look great, that red is perfect. Very vibrant (better than the red used on the Classics Inferno). And it makes a cool red and white combiner torso. The plastic also feels better on Inferno than Hot Spot and I like how they painted the light bar. It just works and it makes me enjoy the hot spot mold more than when Hot Spot was wearing it. Plus they fixed that silly knee issue Pyra and G2 Onslaught had. The red and white torso works really good with lots of different limb bots.
Here are more examples of the possible combined mode from the fan community.
So there you go, a bunch of reasons why I feel Inferno is a worthy addition to my collection. In the end I feel he has as much right to this mold as Hot Spot and simply looks just as good.
noticed that yellow plastic would hide all the details. You can compare 
Headmaster Repugnus. There you can see the exact difference 
