An important practical issue to consider while designing a research project is

A key practical issue in designing a research project is the availability of time and other resources.

An interesting theoretical perspective is a conceptual concern, not a practical constraint on doing the study.

Adding only to the researcher's own knowledge is a private motive, not a practical design consideration.

Insisting that the study must be qualitative prejudges the method rather than addressing practicality.

Practical issues also include funding, access to participants, and ethical clearance.

Feasibility checks match the ambition of a study to the resources actually at hand.