primary mortgage vs investment rental mortgage & new tax bill

[Chase Honeycutt]

With the new tax bills 24K std deduction most folks will no longer itemize...now throw in that a lot of folks here have rental properties with equity in them....

Given the above shouldn't we all be trying to leverage the rental units even more now that all of that interest is deductible, however our primary homes are likely not deductible given the 24K std deduction....

All else equal wouldn't it be better to leverage your rental home with a cash out refi and throw that money into your primary home (assume you have no interest in more rental homes, or other uses for the cash etc etc)  I don't want to list a specific example....