SVN mapping

[V-Man]

Normal speed is flyspeed 1.

No, it's not and the gamespeed command was clearly enough for solo mapping.

The flyspeed command

Determines by how much to multiply the fly speeds by.

Thus, Multiplying normal gameplay speed by 1 (flyspeed 1) means normal speed.
I won't argue about the usefulness of gamespeed.

If you need to test a crouch area, hit your edittoggle button and crouch.

You are joking.

No, you're joking.
It's not difficult to edittoggle and crouch.