No you can't do that unfortunately.
What data are you reviewing in these smart list? There might be a workaround, depending on what you are looking to analyze.
We use Smart Lists as reports for Bounces, Clicks and Opens on our email campaigns. Once the campaign is activated we build the Smart List reports to send to individuals who coordinated the campaign so that they can see those stats. Recipients for each of the Smart List reports within that campaign are the same -- thus the question about using the same subscription list. Any suggestions for improvement?
We've recently had issues with smart list subscription capacity within Marketo as well, so anything that would help trim this down would be greatly appreciated.