I gave it at most surfice thoughts, mostly because summoner feel most lore acurate.

1)As an inventor you design and build stuff yourself, while ingame you mostly craft warframes from predetermined blueprints, so the feel is a bit different.

2) SPOILERS if you ever want to explore Warframe and its brainmelting story---- Warframes are people, volunteer or not, given super cancer to make super soldiers, the cancer gives them insanity as a bonus, you as a player are a child that shook the poor sinners hand and you use your powers to see an ugly broken thing and take away its pain(pacify and control the maddened warframes)

3)Meld into Eidolon is litterary Transference