Kinetic Catalyzers seem to be an outlier in terms of tier progression, where the basic > enhanced gets 3% (160% of basic version total effectiveness) boost, and then enhanced > prototype gives you a bigger 4% (240% of basic version's total effectiveness) boost. Generally the system is supposed to be more biased towards using enhanced gear as the most efficient gear, but with the large cost of even basic kinetic catalyzers plus the tier progression in effectiveness, only the complex catalyzer is seen as worth it.

Currently KinCat progression is 5%/8%/12%. Making it more along the lines of shield extenders or armor plates, KinCats should be something more along the line of standard: 6%, advanced: 10%, complex: 12%. In addition to this I think the basic should have its PG lowered significantly (from 9 to 5 perhaps), and enhanced level should have a slight reduction as well (11 to 8), since currently the baseline PG cost of any kincat is so high that you might as well go for the complex one for the highest return on investment (this isnt how any other gear in the game works except for the old sniper rifle, swarm launcher and nova knife progression).

tl;dr:
Current Shield Extenders Progression: basic: 33/ advanced: 50 (166% of standard value)/ complex: 66 (200% of standard value)

Current KinCat progression: basic: 5%/ advanced: 8% (160% of standard value)/ complex: 12% (240% of standard value)

Proposed KinCat progression: basic 6%/ advanced: 10%(~166% of standard value)/ complex: 12%(200% of standard value)

I think this slight KinCat tier progression rework and reducing basic/advanced pg cost slightly to make basic and advanced tiers more attractive and useful would be a good thing.