i would not trade it, but boot2 could be usefull so ur choice.
I have IOS Bootmii wii and im happy with it. I dont think nintendo will update by itself, but u have to make sure ur Wii 24 connect is off. Even if u dont hav bootmii2, u can still get Pre/priiloader which has some protection and blocks DISC updates. Also it would be good to take some of the APPS of the SD card cuz if they delete something usefull like IOS files then its screwed. I had my wii for like 4 months now and hav no problems and everyone plays it. Just tell em what not to do.