Mainly due to database size limits.
The current process of creating records is inefficient since reps create lists on clay, export it and then MOPs imports it to Marketo/SF mainly to make sure attribution and marketing opt in info is all set correctly.
However, we want to make this a little more easier on the reps and so have created templates that have these fields set correctly, however the concern is reps may push too many records into SF and we may end up going over the database limits sooner than we anticipate.