Kant's Ethical Theory Analysis

From the way that Kant has been interpreted as a constructivist under the standard model, as Wood’s revealed, one can remark three points about this approach: Overemphasizing on the Formula of Universal Law (FUL), Conception of Value, Conception of Autonomy.
A. Overemphasizing on the Formula of Universal Law ( FUL)
The way Kant applied his famous and first formula, namely the Formulas of Universal Law (FUL) and the Formula of Law of Nature (FLN) to four famous examples of maxims contrary to duty, in his major works (the Groundwork, Metaphysical of Moral and Critique of Practical Reason), supports the thought that Kant’s ethical theory might be understood as a constructivist under the standard model. Wood puts this connection as follows:
Kant’s formulas are then treated as candidates for a universal moral criterion for the permissibility of maxims, to be tested against our intuitions regarding the best cases that inventive philosophers can devise as apparent counterexamples. If one interpretation of Kant’s formula yields counterintuitive results, then another interpretation is proposed. The fate of Kantian ethics itself, as a moral theory, is then seen as depending on this enterprise of interpretation, and how well our best interpretation of Kant’s principle fares against our intuitions about the most challenging examples against which we can test