Solving this problem will greatly enhance how Hubspot supports our busniness requirements.
Just want to add on to the suggested solution that adding a system field i.e called “deal type” to the deal to control both which pipline the deal will be placed in and which and “deal properties” will be displayed. Companies with multiple deal types would then be able to have “Deal type” as a mandatory field, and the deal will be assosiated to the connected pipeline and properties. Also this feature could enable to have different sets of mandatory fields for different deal types.