LinkedIn Lead Gen Forms and Marketo
I have a LinkedIn Lead Gen Form which integrates to Marketo.
I need some mandatory fields on LinkedIn, because Marketo>SFDC sync requires it.
However LinkedIn Forms
- Do not provide more than 10 choices for custom question (we need more)
- Do not provide more than 3 custom questions (we need more)

We tried to reduce the required custom questions which we can infer, however there is some data we need from the users (e.g. Product Interest) - and we cannot reduce the mandatory custom questions field to 3. We need at least 4.
Is there any possibility/workaround for this?