Has "Da Vinci's Demons" run out of puff? Season 2 finale, Episode 10

Season 2 of "Da Vinci's Demons" has been all over the shop. Running half way around the world in search of The Book of Leaves, Leo's momma, the fall of the House of Medici and the naughty Labyrinth boys popping up to enlist Risario.
Risario saw a nifty salt water torture device, this time on (especially his eyeballs) the receiving end (shades of "A Clockwork Orange"). It was fun to find out that chubby young Nico will become sanguine, political strategist Niccolo Machiavelli. In reality, he was 17 years younger than Da Vinci, both from Florence and later did work with Leo (see the Borgias and for fun, "Assassin's Creed"). Machiavelli would make a great mini series.
The finale (with Leo about to demonstrate his latest military invention) was merely a warm-up for Season 3.