Make the `WALLY_TX_ISSUANCE_FLAG` more usable?

[Sosthene00]

I was trying to serialize to hex a transaction that includes an issuance in one input using wally_tx_to_hex, and I couldn't see the issuance data in the output when I read it with elements-cli decoderawtransaction. I noticed there was a WALLY_TX_ISSUANCE_FLAG that needed be added to the utxo_index in the input that contains an issuance, and now I can see the issuance details.
Is there any plan to make it more usable, for example using an explicit argument in function like wally_tx_add_elements_raw_input? Or even better could it be implicit from the presence of a nonce or en entropy in the input?
No matter what I suggest to document it briefly in the man, I can propose something if needed.