Yes, finally a 3rd person has taken me up on the offer to analyze their squash game. If you want to take a look at the video the link is here: https://www.youtube.com/watch?v=AazyovQ0QZc
If you post it online I assume it's open for the world to see so I hope you don't mind me posting the link. I'm analyzing the man in the green shirt and I have a few comments for him.
1) You're a good retriever. Your quick on your feet. You have very light feet and get around the court pretty efficiently.
2) You're consistent. You don't make many unforced errors which is a good combination with being quick. This means you will be hard for someone to beat because you'll never beat yourself.
3) You move the ball around and with #2 don't make many mistakes while doing so. I've seen many fit people just hit everything deep and wait for mistakes so it's good to see you using the whole court.
Areas To Improve
1) Be more aggressive. You wait for the ball to come to you. When you get a loose ball, move forwards and take the ball a bit early, this is also a more confident and assertive way to go on the attack. Try and practice taking more balls before the back wall in general. You look like a good athlete and should be fit enough to pick up the intensity a bit!
2) Get your racquet up higher for your drives. You have a very late racquet preparation and have an extremely short backswing. You could hit the ball with more pace if you got your elbow up, and quickly! Early racquet prep is sooo important!
3) Get lower/stay further from the ball. You're a tall guy and you could make the court play a lot smaller if you worked on getting your hips down by bending your knees. Currently you are too upright when hitting the ball on the bounce which brings you further from the T and means your swing has to go upwards to get the ball over the T. If you get lower you can hit the ball flatter and be more aggressive with your shots. I recommend taping a dotted line around the court with masking tape. Go along the inside of the service box up to about 2 or 3 feet away from the front wall. You should very rarely have to get both of your feet within this taped area when you strike the ball. Currently you do this frequently.
4) Here's a bonus one. I don't want to give too much feedback, but I think you would greatly improve by learning to use your body to help you get power and transfer your weight into the ball. You currently swing with just your arm. Learning to rotate your shoulders, use your torso, core and legs will allow you to do # 1 better. Basically all 4 of my tips are to get you to be more aggressive and hit the ball with more power. You have the tools (athleticism and consistency) to become a much stronger player.
I've worked with a number of players such as yourself. It takes a change in mindset to become more aggressive. You may make a few mistakes, but this is the only way to apply pressure on a stronger player. Thanks for being brave enough to have your game analyzed online! Good luck David!