It would be nice to be able to adjust the pull radius of the guardian and castle within a given range, to allow flexibility in your defense.
In war, it's obviously a goal to make it as hard as possible to pull and kill your guardians and troops. So, it is in some ways frustrating that you want them to not attack so quickly.
The pull and kill has become a staple of every war attack, and it is the reward of applying strategy. So from that perspective you are taking away something some have earned.
On the flip side, there is risk/reward to having this implementation. It means that people will be able to attack the outer defenses longer without worry of the castle troops or guardian(s) attacking in some cases.
It's an idea, but not something I feel strongly needs to be addressed as it creates strategy already.



