I believe it’s a good approach.
It allows the bochrim to become fluent with the gemorah and Rashi, focusing on entrenching and grounding themselves in poshut pshat.
Once they have spent a few years doing so they will be in an excellent position to fully grasp the subtleties of iyun.
Some may feel that the bochrim will be bored with only doing bikiyius. I believe that a dynamic Rebbi should be able to alleviate this issue.