No, 100% No!
When a player gets IP banned it would Ruin the run for family and friends from playing on CubeCraft using the Same ip!
I know people HATE hackers but they just have to deal with it or Report it Here.
Even if they do use an Alt or some Other way to bypass. They Will get Caught and there punishment will Increase.
Hackers are given a Chance because they might be new to the server and maybe never read rules.
When the hacker Gets banned its only 7days from Sentinal. you never know They Could Change!
Like what Sweetenerera Said Brothers And Sisters might use the same public IP. Also they might Love this Server with a level 39 and Diamond Rank! and while there brother or family member uses Hacks and thats Totally unfair.
Also Mods they might not knew they could not use. and they will not get IP Banned. - E.g - X-Ray Resource pack
Anyways i 100% Saying No! And i am Glad they get another chance and they Should.
I am Staying with Sentinal on this one!