[wjdp]

I find it depends on the number of subcommands and if those subcommands are clear. It's rather useful to have the options whittled down to just the ones you need if you know which subcommand you need but otherwise can be painful.

Grepping through a large list of options is also painful, seems ther needs to be a balance here.

[candiddevmike]

No need to grep, just use less and vi commands like forward slash to search through things/move about a long list.

[hk__2]

It’s the task of searching in a long list that’s painful, not the tool to do it.