If you change the cost of logistic system this means you can get robots with only blue science but with blue science actually you get
cargo size 1
worker speed 2
AND robot mk2 (let be honest, having some aluminium at this point is not a big task)
So you can have a fully and fast robot logistic with mk2 robots already boosted (I was doing this during 0.14, directly skipping the MK1 robots) and this is before what we can call mid game in Bob's and your map is nearly done.
No more logistic problems, mass robot and they will fairly do the job as MK2 robots. There is still a big gap between MK1 and MK2 robots in my opinion, mk1 are so slow compared to mk2 (or mk2 so fast

so in my opinion the logistic system maybe need a change but everything else need a change too. You want early / mid game robots, fair enough but they need to be slow as MK1 robots are and not directly MK2 stuff at this point because the tech allows you to get them.
I think the recipe of the robots are good and match nicely the factory progression maybe the change are just when you unlock the tech.