Your 1st game told a sad and deep story, one that taps into your emotional state and tells the sad tale of this automoton as he tries to make sense of the world and 'mother'. This one did not, why? Its simply too short to tell the emotional tale the 1st one told.
It appears you are going to tell this in installments, that will make it hard to get people in the right stste of mind, you will need most of each game to get people in the right state, and this will leave almost no room for storytelling.
Ignoring the story its a good platformer, the switch mechanic is nice, however there is only 1 puzzle where you need to use the 2 characters together to solve it. This makes the mechanic feel wasted.
When you do the next one im temped not to play it, i may wait until you have finished them all so i can play them in one hit. I do like where you are going, I just think it lacks the punch and depth of the 1st game