Why not? I see it as another fail-safe mechanism, as even something stored offline can be lost/destroyed. After all, it's not like it hasn't happen already to bunch of people, even those that had shit load of BTC.
If I get this right (I mean OP), the final result will not be memorizable, the 128 bit hexadecimal seed will be converted to decimal and split into 32 which he regarded as the size. This will result to getting of 32 pictures which you can use for each number (decimal numbers splitted into 32) to remember.
But, is there any wallet the pictures can be imported and it will generate the right keys and the addresses? No.
This will make it very difficult to access the keys especially as a means of inheritance. It is not in accordance to any BIP or any reputed wallet standard.
In my opinion, I just see this as a means of someone toying with his or her coin. But we all have different opinions about how to protect our coin, I will prefer the seed phrase (+ passphrase).
Better still to go for multisig wallet. There are BIP options that makes this above approach not necessary.