I have no particularly strong opinions regarding the minimap itself, but in my opinion the leading minds of HoI4 are going through a very strange path in regards to free/paid content.
The Spearhead batteplan (you know, an essential part of WW2 strategy in a WW2 game I bought for 29.99 bucks), locked behind TfV (further 14.99 bucks), comes to mind. If you compare HoI4's free patches with Stellaris' you are really surprised by the difference in marketing philosophy. The Stellaris team even ripped one of its DLC' main selling points (Ascension Perks from Utopia)... and put it for free! Not to mention the load of QoL stuff they put for free.
Seriously, take a look at Leviathan, Utopia, Synthetic Dawn and Apocalypse and their feature lists. Where is the QoL stuff that makes the user's life a bit easier? You won't find any... It's all in the free patch.
Meanwhile, HoI4 sells major (equipment conversion, combat log) and minor (minimap, garrison orders) QoL features in addition to true content of questionable quality - DLC-bound focus trees lacking flavor and expanse and losing to *user-made mods* by a vast margin.
I enjoy HoI4 (my DLC list hopefully proves it), it's a really good game, but as a gamer without unlimited funds I must balance out whether a DLC is worth it and whenever a company (even a very customer friendly like Paradox is) is trying to sell me cheap features that should have been in the base game to begin with because they are absolutely part of the core promise.
Now, is a minimap in a sprawling strategy game "a part of the core promise"? I confess I don't know.