Hitting balls only in practice, while beneficial for honing technical batting skills, may not fully prepare a batter for performing under pressure. While technical skills are fundamental, they need to be complemented with mental, cognitive, and vision skills for a player to be well-rounded and successful in the dynamic and varied contexts of cricket.

1. Limited Adaptability: A player with excellent technical skills but lacking in cognitive and mental aspects may struggle to adapt to varying game conditions and situations.

2. Poor Decision-Making: Cricket involves quick decision-making, like choosing the right shot or ball, or making tactical field placements. Without strong cognitive skills, a player might repeatedly make poor choices, diminishing the effectiveness of their technical prowess.

3. Struggle Under Pressure: High-pressure situations are common in cricket, such as a close run chase or defending a low total. Players who have not developed mental toughness might falter in these scenarios, unable to perform to their technical potential.

4. Difficulty in Long Formats: In formats like Test cricket, mental endurance and focus are as important as technical skill. Players who haven’t developed these aspects might find it challenging to maintain concentration and consistency over prolonged periods.

5. Over-Reliance on Technique: There's a risk of becoming too mechanical or predictable. Opponents can easily strategize against a player who is technically sound but lacks the unpredictability that comes with strategic thinking and situational awareness.

6. Difficulty in Self-Improvement: Without cognitive and mental skills, players might find it hard to critically analyse their performance, learn from mistakes, and make necessary adjustments. This can hinder their growth and development as a cricketer.

7. Reduced Longevity in the Sport: Players who rely solely on technical skills might have a shorter peak period. As physical abilities decline with age, it’s often the mental and cognitive aspects that help experienced players maintain high-performance levels.