Syntax checking?

Subject: swimming pool, please let me know if I have any syntax errors?

Development refer to some software

The funny thing about this development is you find out, that simple features are the most cool ones such as just rankings. You know, swimmers used to start in rows and they don't know exactly how are they doing within the group. And suddenly just adding this simple feature for us and there's a ranking, so I need to change the whole dynamics, people are starting to race with each other, even if some swimmers swim in the first row and other swimmers swim in the third row, and suddenly they're racing together.