The question asks which action does not result in higher levels of PAT $($presumably Product Assembly Team$)$ productivity in assembling cameras or drones. Let's evaluate the options:

$1.$ Maintaining a total compensation package that is higher than the industry average total compensation package $-$ This could incentivize workers to be more productive, as they are being paid more than the average.

$2.$ Increasing the amount of overtime pay received by PAT members in any given year $-$ This could also lead to higher productivity because it provides a direct financial incentive for working additional hours.

$3.$ Spending more on research and development $($R&D$)-$ This typically leads to improvements in technology and processes, which can increase productivity, but it is not directly related to the assembly team's immediate productivity.

$4.$ Increasing the annual base wage of camera$/$drone PAT members by $2\%$ or more $($up to the maximum allowed $10\%)$ in a given year $-$ Similar to the first option, this could motivate workers to be more productive due to higher wages.

$5.$ Cutting the number of camera models being assembled from $5$ models to $3$ models and the number of drone models being assembled from $4$ models to $3$ models $-$ This action could streamline the assembly process, reduce complexity, and potentially increase productivity due to specialization and reduced switching costs between different models.

Based on the options provided, the one that does not directly result in higher levels of productivity is spending more on research and development $($R&D$).$ While R&D can lead to long$-$term productivity gains through innovation and improved assembly techniques, it does not directly impact the productivity of the assembly team in the short term.