First of all, I wish all open worlds were much larger in size. It really has a quality that no amount of praise can be enough. However, it is very unfortunate that this map feels limited in scope. I hope that at least the size of Plains of Eidolon will be more than double the size it is now. I would like to see more of the old remnants of sentient out there. desperately
Second, I hope that teleportation devices that exist in open worlds will be removed or their use will be restricted to some extent. There is too much to lose by moving around a large map with one click. I think maps that are literally huge should be consumed slowly to accommodate their size. In the process, you will be able to observe carefully created maps and enjoy and understand this world view.
And there are warframe features. Each warframe has its own unique characteristics. The usage is different, such as a warframe focusing on ability damage and a warframe focusing on mobility. However, there is no place other than the open world for mobility-oriented warframes to function properly. They are too limited to show off their abilities on regular maps, and there are more important missions than that. Also, the damage is inferior to warframes that focus on ability damage. Elements like teleportation pads and archwings make mobile warframes unusable. Please find their fun.