When it comes to #Bitcoin inheritance, what is wrong with this approach?

Multi sig 2/4:
- Personal Coldcard
- Personal key (might be tapsigner or software)
- 1 seed in my will
- 1 seed with a trusted friend who knows Bitcoin

I still have full control, but when I am no longer around, funds are recoverable.

What am I missing here? 

 Might be better with two friends, both with the same seed. 

 Hadn’t thought about that one, thanks