With the way the research tree is currently laid out, Turrets and Walls should be gated by red science packs. In other words, they're visible at the start of a game when they shouldn't be.

However, you might consider moving them earlier. It starts becoming really hard to defend a base with no turrets once medium biters are out in force.

(I'm significantly behind schedule in my current playthrough because there was no early rubber production :P)

Other minor issue - can't fast replace burner long inserter with electric long inserter. Needed to pick up the burner one to put down the electric

Other research that should be gated:

Physical projectile damage 3 behind Military science
Electric centrifuge, Electric crusher, Greenhouse 3, and Electric press behind Chemical science

Also, it's possible to research Electric Engine before Engine, which is not very useful

Quite a few researches should be gated behind Chemical:

Electric centrifuge
Electric crusher
Greenhouse 3
Electric press
Robotics
Equipment burner generator 1
Lab research speed 3
Inserter capacity bonus 3
Mining productivity 2
Refined flammables 3
Stronger explosives 3
Follower robot count 3
Physical projectile damage 5
Weapon shooting speed 5

... I don't know without looking if this can be influenced by the Phasma mods at all, but Power Armor MK3 mod's Nightvision MK2 should also be gated behind Chemical Science

Wood Liquifaction's icon looks kinda squished