Advice/thoughts, lighting for shared space pedestrian/cycle area - defined route or free for all?

Hey all, on non bike days i work as a lighting design consultant and occasionally i provide lighting input for exterior planning reports. I have a new waterside development project that has a designated bike path that runs along the waterside then passes through an open area (approx 30m distance) before rejoining a more defined route. Part of my role is to state what the level and uniformity of light should be to provide safe passage. In general we use British and European standards as guidance not absolutes and whenever possible we derogate to lower the level of obtrusive light and create a more natural night-time environment. However a space that has both cyclists and pedestrians moving freely together would be considered a conflict zone where the level of light needs to be raised accordingly to ensure safety. Note there is no motor vehicle access.

From a safety/behaviour point of view would it make more sense to have a defined route clearly illuminated through the square or provide an even level of light over the entire space that allows both pedestrians and cyclists to find there own way through?

The architects would prefer the former but my understanding of shared spaces is to encourage cars/bikes to slow down and think of pedestrians first. My concern of lighting a clear path is cyclists not slowing down or considering this as there right of way. Given that there would be no physical barriers this worries me. My experience is that it's unrealistic to think pedestrians will pay that much attention to "defined" routes unless there's cars involved.

It's easy for me to advise on light levels for either options but i'd like to know what the current thinking is behind how we should be encouraging cyclists to use these spaces.

Any thoughts from people with experience of designing these spaces would be much appreciated.