It's tough to say because, depending on your repayment plan currently and when you started it, you could be close to loan forgiveness as it stands (IBR allows for loan forgiveness after 25 years). If you change your loans, you reset your clock...
With that said, here are the answers to your questions:
At this point would it be worth consolidating into a direct federal loan?
Maybe, see above.
Would I be able to get a lower rate?
You would get the current rate on loans, which is better than what you're paying. But the interest rate doesn't really matter in your situation as you're focused on loan forgiveness. The real goal is to pay as little as possible then get loan forgiveness.
Would these enable me to qualify for a portion to be canceled as currently being proposed in congress or freezing interest accumulation under Cares Act?
We don't know, but I would guess it would only apply to Direct loans, not to FFEL Loans.