end-of-year review里怎么写同事的缺点？

到了年末，我被要求给mentor写end-of-year-review，其中有一个问题是"What can he/she do to improve performance?". 这个很tricky，写得不好会得罪人。大家觉得我应该提点不痛不痒的意见，比如提醒同事可以“lead完一个meeting之后给所有人发个邮件总结讨论结果和下一步”，还是直接写"Can't think of any"？

要是跟你关系好的同事你就看他级别next level有什么要求，然后给一两个例子让他朝那个方向努力，make more impact拉，lead a bigger project拉之类的
要是跟你关系不好的，你就在他现级别里挑几条做的不好的 🤪

XX has been doing great on A,B,and C. He/she can make a even bigger impact by doing D

我给老板写或者老板给我写都是说while xxx [is doing great] in blah blah and I really don’t see any existing issue in [area], xxx may make more impact if they [suggestion] since xxx’s [knowledge/experience/impact] is very valuable to [team/peers/etc]
这样提了建议但是也各种强调了不是想说坏话