It is a subjective, make or break kinda thing. As long as you clearly communicate with your ID, they can cook what you want well enough.

Aside from site visit, state what you want & then listen to what they have in mind or proposed & tweak those that you seem that is not what you want because

if you give vague shit like "anything" or "something is missing but i dunno what", it is bound to have disaster & unnecessary waste of time for revision, resources & VO if you're not going to leave everything to ID to decide.

You pay them for their time of some if not most brainstorming, all required 2d drawings / 3d modelling (even with Comp-aided software, it can take one heck of a time depending the scale of the projects) that will then be used by many ID appointed contractor/supplier/manufacturer/etc. for further coordination, stuffs and many more till its completion because, contrary to what most belief, ID work scope is not just design only.

This post has been edited by AdisonMak: Aug 6 2022, 12:21 PM