I have some concerns about calling literal game-changing items "Playtonics", and the implied tone of the narrative which that choice makes.
(Btw, all who wish to simply retort "iT's RaRe! I'd EaT tUrDs oUt Of A cAn If ThOsE gUyZ sH** it!": Please don't bother contributing.)
I worry that too many explicit references to the Man Behind the Curtain (Playtonic, the Player, Reality) will only undermine immersion in Yooka Laylee's offbeat world, and distract from whatever plight the duo and their world are actually in. Banjo Kazooie had fun, 4th wall-breaking dialog jokes, but they never sacrificed suspension-of-disbelief to do it. Conker's Bad Fur Day, on the other hand, never ceased trying to let the player in on the joke. Conker always reminded the player that he was just a regular guy stumbling through poorly-concieved set pieces. I thought that game had its moments, but its incessant attempts to make fun of gameplay through senseless dialog, puzzles, and a narrative that was written up and over the 4th wall, was suffocating. It was as if in order to make fun of shallow, mediocre ideas, the designers felt the need to embrace them. As a consequence, from beginning to end, I never really knew what the stakes were or cared about anyone or fulfilling any goal.
Going tangentially off topic.
Point being, I am hoping Yooka Laylee's world is as mesmerizing and mysterious as Banjo's, which despite many good cracks at the 4th Wall, left it mostly intact. I think Yooka Laylee would only benefit from items which originate within its own universe and serve the narrative EQUALLY AS MUCH AS function. The inclusion of "Playtonics" and "Arcade Machines" are inherently alien to their universe, so I only hope Playtonic [Games] are keeping their eye on the ball for the rest of the gameplay and avoiding the pitfalls of Conker and Nuts & Bolts.
Let Yooka Laylee be the story of Yooka and Laylee's journey, not the incessantly cheaky story of Playtonic giving Players the kind of Gameplay they miss.
And yes, they could very well be focussed on this already, and "Playtonics" and arcade machines are just fun exceptions to the rule.