How far is too far?

I was just reading a post to a forum that was relating things say by one of the developers of Dark Heresy. Apparently he thinks that Inquisitors would pretty much give Acolytes whatever gear they are qualified to use. There income is basically for if they want better quality gear, really rare things, don't want their inquisitor to know they have it. He went as far to say that a character at rank one with power armour and a bolter wasn't as ridiculous as it seems at first as they wont be rank one for long.

A keep part of what I think he was getting at is that people enjoy games when they get to do cool things and have their moment in the spotlight etc. As long as everyone gets to have their moment then everyone will be happy and the game will be enjoyable and memorable.

This got me thinking about how far you go with this? How often do you say yes to whatever crazy scheme or desire it is that your players have? I tend to be pretty liberal with this having spent a long time running Exalted which is the say yes game. That is to say you say yes to just about anything the players want to do and then just hit them with the consequences (which they then ignore being superhuman demigods)

Already in Radicals and Puritans I have given the players the option of learning warp sorcery. All they have to do is read a couple of books they have and pick up a few corruption points. I'm even planning to let the tech-priest learn it f he wants (which I'm pretty sure he does)

And the Guardsman has a heavy stubber, not the most powerful heavy weapon but it makes a big mess of most heretics.

How this effects the style, feel and enjoyability of the game is yet to fully be seen but I think it will work out and ultimately I don't think any piece of equipment the players could possibly have, nor any skill or power is going to stop them having to face down things bigger than them and deal with the dilemmas that they will have to face. (A power can't help you decide if you should destroy a whole planet to make sure the daemon is really dead)

Anyway, next time I shall give a summery of the seventh game so you can be all up to date on what has been going on.