Mostly agree on all points there but I'd like to elaborate on one I'm personally rather vocal about;
These two used to be in very early during the older versions of Reborn and were moved back due to being among the better Pokemon of their types available, however in the current state of things they are kept obscenely far behind for very little obvious reasoning. At the point where you get Magmortar, you've already been able to get Arcanine, Ninetales, Typhlosion and Darmanitan for ages, all who are very big competitors. Unlike Electivire you can't even get it via mystery egg to possibly obtain it by Calcenon instead of trading a Magmarizer for a Magby who you can't even evolve. Electivire similarly has a lot of competition yet is still better because it offers things they don't. It has actual coverage, good stats, a good ability and a move it can abuse to maximise that ability; Ion Deluge. Vikavolt, A-Raichu, Magnezone, Rotom and Ampharos are all amazing but none of them have the combination of coverage, stats and ability that Electivire does. Magnezone outclasses it in terms of overall utility however.
Either are Pokemon that would likely be very desireable if available earlier as Elekid/Magby, as Magmar/Electabuzz provide very mid range stats with good moves to utilise them and keep a team afloat. They'd fall off a bit nearing Agate and then hit a power spike when finally evolving into their final stage at Calcenon which mind you, is 11 badges into the game. That's more than reasonable for these Pokemon to be able to evolve.