It's not unrealistic. Shatty rental got #1, #2 and a B- prospect. Nash rental got #1, #7, a B prospect and a middle-6 forward worth at least a second rounder if we dealt him away now. MZA is a better prospect, would play the whole year for the team and we can eat 50% of his salary. We should be able to get 2 firsts from a good team (2018 and 2019) and a B prospect. That would give us 4 first rounders this year and likely 3 firsts next year (I think Tampa is likely to make the SCF at least once in 2018 or 2019). That would be 9 first rounders in 3 years, including Lias and Chytil. Add the emergence of UDFAs Pionk, Geo and Vinni as legit prospects. Plus the acquisition of Howden, Hajek, Rykov, Lindgren, Bigras. Then there are old prospects: Shesterkin, Nieves, Fontaine, Crawley, Day, Ronning, Barron, whoever is the B prospect we get for MZA, etc. And the 4 picks we will have in the second and third rounds this year.
That's about 15 really good prospects (worth a first round pick or more) plus at least another dozen with a realistic possibility NHL future. Maybe the best farm in the league.
Alternatively, we could do MZA at 50% to Tampa for Raddysh and Foote. They have Kunitz and Sustr coming off the books, so they can easily fit MZA at 50%. Lias, Chytil, 5 more first rounders, 3 more seconds, 3 more thirds, Shesterkin, Geo, Huska, Pionk, Foote, Hajek, Rykov, Lindgren, Bigras, Crawley, Day, Howden, Raddysh, Nieves, Fontaine, Ronning, Barron, Lettieri... wow. Over 30 legit prospects.