We've had to enforce hard limits to avoid overuse (and sometimes abuse) of our system to the extent that they were affecting the quality of engagements,
We recommend creating a new pod for new users that you wish to accept.
We have a new feature coming out soon where the default pod comments will appear separately for each pod that is used within a single LinkedIn engagement. This will have a net effect of allowing highly customized comments that are relevant in context to the nature of each pod.