passion driven

Can I establish a creative team that identify what are the products or services we are passionate about, and after found out how to make it work, then only go out to get those accounts.

this is the common way in advertising:

1. pitching account secured
   
2. get creative brief
   
3. start selling to client
   
4. get approved (here involves changes, sometimes a lot of time)
   
5. roll out

here's what i think of:

1. what's the product/services i like to work on
   
2. is there a idea and strong belief in making it work
   
3. if yes, write it down then go to pitch the client
   
4. work in a way to have a trustworthy relationship, so the client believe the work produce to avoid all unnecessary changes. and make life easy for all.

During my freelancing work, the account director would take the work to get clients' approval, and a lot of time, when the comment comes back on designs, art direction or whatsoever, i dont feel good about it:
first, is the comment base on research? or just personal opinion?
if its base on personal opinion, does that means their art sense is stronger than trained designers or art directors?
If you take a single piece of work to anyone, comments is always there, but which are the comments to be value? i think its base on logic and trust.
Just like one don't walk into Giorgio Armani and request for a different cut on the outfit, first they won't do it for you, secondly, you accept and buy their sense. of course, there are variety of brands for you to pick. But basically, they won't change it for you.

i would like to work this out and get things to run more productive.