Besides the lack of many useful extensions, as already cited, there is the absolute lack of flexibility in configuration.

They got rid of the "extension bar" where I kept all extension buttons at the bottom of the screen. Now they just throw all those buttons along the address and search bar, squeezing everything. Not happy with this they inserted some undesirable icons (like save to pocket and other trash) that we are not able to get rid of. It looks like the developers all uses 4K display, despising completely the comfort of notebook users.

I do notice an increase of speed, but the uncomfortable feel increased orders of magnitude more.

It makes me desire to give a try to other browsers, perhaps there is some that I can make comfortable to use.

And it produces beautiful trees, wich seems to be a nice way to get it out of atmosphere.

AFAIK, no machine is 100% efficient, that is all of them dissipates heat. Using them to make clouds that will reflect heat back seems be a nice trap for the so produced heat.

By the other side, all those salt coming down with rain and crystallizing on the floor will increase the albedo making earth colder.... Ok, it will be sterile too, but much colder. =)

Pehaps "what clouds possibly go wrong..."