This... this is actually brilliant! there's always been 2 very distinct (I guess 3 if you count Geaneology of the Holy War, but we'll get back to that) flavors of Fire Emblem.
Flavor 1 is the high strategy/Resource Management FEs. money, equips, and EXP are all finite resources that form a symbiotic circle of management that factor into your movement across the battlefield just as much as who the best unit to dispatch an opponent does...! "I could easily have Nephenie dispatch this sword master with the killing edge, but my Killer Spear is down to 2 uses, and if I don't crit, that's gonna break and cripple her effectiveness... maybe I should move Tormod up and have him try and possibly whiff a Bolganone and pick up some EXP? at the same time, there's like, a bunch of Sword/spear paladins sitting over there, oh ****..."
Flavor 2 is the Fire Emblem Gaiden/Sacred stones/ Awakening flavor, which is more cruched on the high RPG aspect of things and having the ability to min/max and not be forced into hoping the growth RNG blesses the character you like with good stats. at the same time, being able to grind for money that you can eventually spend on stat ups or items to respec a character starts to rob battles of tension when you know if you'r ehaving trouble with a mission that you have the option to just fall back on mashing zombies in the face with disposable iron tat for coin and EXP. "Oh, hey! Est! she was impossible to use in FE1 since you get her so late, and... I mean, this isn't any different, except for the fact that I can take her back and train! I just have to get through this mission without anybody poking her with an arrow or something stupid!"
I know some people who really thought Gaiden and Sacred Stones were kinda trash, and only kinda begrudgingly accepted FE:A because of how awesomely it handles it's fanservice to the series at whole and that it got their friends talking about FE.
this is like bitching that Nintendo is selling you Chocolate and vanilla ice cream seperate, and that the choco-vanilla swirl with strawberry and walnuts on top costs extra.
Here's hoping that campaign 3's 'combination of both' gives us flavor 3 of Fire Emblem, which we only got in geaneology of the Holy War.
Flavor 3 is somewhat close to the first flavor of high strategy, but rather than picking out portions of your army, you are utilizing EVERYBODY! all your units come for every map, but the maps are HUUUUUUUUUGE affairs with mini-maps in the forms of castles you can conquer from enemies and then keep control of by having your units garrison there, giving your army at large various benefits! "Arden usually has trouble keeping up with the group, and Adean is good for healing the big lunk, so they can stay at this castle in case reinforcements show up, and I can keep pushing the line with Sigurd and the rest of the cavalry!"