Tom, As it is an imaginary exercise, just to give fun to those of us like me who haven't a clue what real golf course architecture involves, I don't think we'll do you out of your fees. But, as Adrian says, there will be a lot of this sort of work around in the UK. I'm sure a lot of it will be carried out 'in house' and that much of it will be very average - quite possibly the course is already no more than average - but there will be clubs which recognise the vision that professional architects can bring to problem solving.
I have a parallel for you. In the current economic climate few people are moving out of our densely populated suburb, preferring to extend their house. Some are doing it themselves, some get in builders who simply add bits onto the house. We got in an architect. We had some ideas of what we wanted, but he talked to us about our lifestyle, how we used the house (we both work from home), and so on. He went away and came back with the most imaginative way of extending and we now have a number of really interesting and successful rooms that we could never have dreamed of. Yes, he cost money, but the ingenuity of his design meant that the finished project was no dearer than if we had not used him.
Many of the better clubs/courses around here retain an architect on a consultative basis. Any major alteration work of this kind is going to be put out to tender. Wilmslow takes professional advice on all matters of greenkeeping and there is a winter programme in train at the moment including tree and undergrowth removal. It's not being done in a haphazard fashion. The consultant has drawn up the scheme for tree removal very precisely - some of it to to allow for my slice! As the average age of that wood is considerable it is clear that many of these trees will come to the end of their lives at the same time. A programme of appropriate regeneration is under way.