There should definitely be some sort of consequence for being hit by the ball. I've had Starc smack into my ribs at 95mph and I've walked away from it like nothing happened.
Same when you bowl and the AI miss and it hits them. Would be so satisfying peppering a lower order batsman with short stuff
I'd like to see an injury system that is connected more explicitly to gameplay. One that encourages a more realistic approach to the game by presenting consequences to the actions you take.
A dive from the batsman might carry a 1% chance of injury.
Too many hits to the body/torso can result in an injury that reduces your mobility and your strength, e.g. a broken rib. If I'm having to fend off or attack aggressive bowling then it forces me to approach the game in a more realistic manner. There's a bit more pressure to play shots or evade rather than just take it.
If I run too many quick singles, bowl too many effort balls, I run the risk of a leg injury that significantly reduces your mobility.
If I get hit on the hand maybe it your reduces your strength or timing.
You get two hits to the head before you are offered the chance to retire hurt. A third and you're pulled out. Hell, I'd even take a mini-game that acts as a concussion test.
If you get injured, you are presented with the option to retire hurt. You can play on, but with significant reduction in whatever specific area would be impacted by the injury. E.g. leg could be 50% reduction to speed. Torso 25% speed, 25% strength. If you continue, after the game - there's 50/50 chance that the period of injury is doubled. Risk and consequences. At the moment I know there's an injury system but I don't even think about it.
Of course I'd like all of this information - the progression or risk of injury - to be available. Maybe an outline of a body - split into legs, torso, arms, head. Green zones, yellow zones and red zones for high risk. If you hit the red zone you could recover by not running so many singles, taking the bowler off for a long break or laying off the effort balls.