The optimal antenna configuration and beam focusing scheme proposed in the study offer significant performance gains in terms of spectral efficiency and spatial multiplexing. However, there are potential tradeoffs to consider, particularly in practical implementation complexity. One tradeoff is the hardware complexity associated with implementing the optimal antenna configuration, especially in large-scale MIMO systems. The precise positioning and alignment of antennas in the proposed configuration may require sophisticated hardware design and calibration processes, increasing the overall system complexity and cost. Additionally, the beam focusing scheme, while effective in maximizing spectral efficiency, may introduce additional computational complexity in real-time signal processing. Balancing the performance gains with the practical constraints of hardware complexity and computational overhead is crucial in determining the feasibility of implementing the proposed scheme in real-world applications.