It is relatively uncommon for a mecha anime to focus too strongly on the process of robot design and testing; test pilots are a common archetype (most iconically, perhaps, Isamu Dyson in Macross Plus), and the process of thrashing a new unit through its paces is usually a good framework for its sudden deployment in combat. This is why it is particularly interesting that 2017 saw two series ostensibly focused on robot designers, rather than professional robot pilots. I have written at some length about Atom the Beginning‘s interesting slow burn to a disarming revelation about society’s relationship with AI from the perspective of two students of engineering who build a sentient machine. It focused, in its own way, on the minutiae of being a research student. The difficulties in getting funding. The importance of always moving forward and iterating.
There are no shortage of anime which put a mecha genre spin on the “modern-day character ends up in fantasy/alien world” (isekai) theme. From Aura Battler Dunbine through arguably series like Orguss into ones like Magic Knight Rayearth or The Visions of Escaflowne it has strong precedent, and it is a genre that brings a few additional interesting themes to the traditional science-fiction and fantasy ones. I am personally very interested in stories of culture shock, or outsiders to a society trying to fit in; it is for this reason I was quite disappointed in the TV adaptation of Crest of the Stars because it hinted at being a story of a human living as the ward of aliens and learning their culture, and then did not really deliver so much on that. One could almost consider, actually, a story like Crest of the Stars as the pure science-fiction equivalent to the isekai story – a human living among aliens.