Particle Emission Rate? By default in Blender, you set the emission of particles by specifying a starting frame, an ending frame, how many particles you want to spawn during this time, and how long you want each particle to live for.

This is fine and all, but it would be incredibly useful if instead you could simply state how many particles per frame you would like to spawn, and to have that carry on for as long as you want without having to constantly adjust the start/end frame and particle density.

Is this currently possible in Blender? If so, how is it accomplished?
with the new particle system in blender 2.9 alpha this solves my problem