I build games, and have done so for years using among my many tools 3dsmax.

I would love to use blender but I am one armed, and blender relies hugely on keyboard combinations.

This completely me excludes me from any kind of meaningful 3d modelling tasks in blender, as well as making your software weird and techy to where a few buttons to toggle these values would actually make a better experience and softer learning curve for all ( a "weld" button for vertices as an example).

I am, as I know, in the minority here, but I imagine the people who want to press CTRL + P + f + X and rotate their mouse simultaneously instead of clicking a button which means "I want to do this" are also in a minority.

The proper name for combinations like these are "keyboard shortcuts" and they should be treated as thus. The quicker way, and not the only way. You are excluding thousands of talented individuals.

Free is a very important word for me, and I really admire what you are doing with blender in so many ways, but currently 3dsmax is more "free" for me, in that I can use it at all.

I'd really love you to change this, at least on the basics level where mesh building, uving and editing could all be done on the mouse alone.

I am a firm believer in open source technology and have revisited blender many times, but in this instance my current findings are that blender is far from "free for all".