move_and_slide() cannot test without placing the object, move_and_collide(vel, true) only returns one collision

[Bellbirdbits]

It doesnt seem possible to test for more than one collision using move_and_collide().
If an object happens to collide with two things, in my case the floor and the thing collecting it, the engine cant do both, only the floor collision is returned.
if I use move_and_slide() I cannot use the true flag to test the new position and decide what happens

What should I do?
Is this worth putting a proposal in to get some kind of parity between the two functions?

All I want to do is use something like move_and_collide() and get a list of everything it hit,
or have some way to get all collisions, but have the option to respond to different class types (eg col.get_collider() is my_type)

[Jeghams]

in 3D move_and_collide() have a "max_collisions" argument so you can get as many collisions as you want , idk why it doesnt exist in 2D
move_and_slide() should return everything it collided (or slided) with, you have get_slide_collision_count() and get get_slide_collision(index), tho not sure how reliable this is in your case