...Switches to open doors? That's basically the same as using a key. You just make the opening-door-switch in one event, (On Key Press, <>Turn switch xxxx:OPEN 001 ON) and the door in another, with 2 pages (one closed, on open with the precondition OPEN 001 is ON)

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As to pushing a block onto a pad, that's actually pretty simple. The block itself would have this line for moving:

<> Move Event - This Event, Face Away From Hero, Move Forward

Then you'd just have it store its X/Y location in two variables (BlockX/BlockY):

<> Variable Oper: [0001:BlockX] Set, This Event X Coord
<> Variable Oper: [0001:BlockY] Set, This Event Y Coord

...which are then compared to wherever you want the block to end up, using a simple nested branch. If they're the same, you set a switch which opens a door event.