I am not convinced too many modern courses look the same. We are "victims" of high profile openings in recent years which to one degree or another follow the Sand Hills look. Its easy to conclude too many modern courses look the same when in truth its an incredibly small number of courses in the big scheme of modern architecture, but they tend to be media darlings.
One great aspect of modern designers is the willingness to restore (or extrapolate how a course "should" look) features, styles and looks of and on golden age courses. I think this side of design will continue to grow in importance and may even lead to new archies looking at taking a step away from naturalism in favour of a more raw, functional manner. If we move away from bunkers this rough and ready earthworks approach may become easier to achieve. Even with bunkers, more could be done to expand the Pete Dye look of Harbor Town or The Golf Club. I think, for instance, Castle Stuart was edging more in that direction. In retrospect, perhaps not far enough.
While how a course looks is very important, I am more interested in archies who are proposing ideas which effect how courses play. Meaning the exploration of different length courses in terms of yardage, par, number of holes, alternative routes etc etc. From this perspective, a guy like Doak has been outstanding and I think he will continue to be outstanding. The day may come when even see him depart from a naturalism style.
I am very keen to see design bifuraction. I really don't buy into the concept of a course truly playable for all unless the the back two sets of tees are basically where the nearly all of the extra walk happens. Meaning the course is primarily designed, as in green to tee walks, from the 5500-6000ish yardage perspective. That doesn't happen often at all and when it does happen it is often older courses which have simply added back tees for big boys. Pinehurst is a good and rare example of this. You want to play way back, the onus of the added walk will then be on you. However, my idea for bifuraction is really to focus more on women, seniors and kids. Much smaller property, tight knit design for a good walk and tips out at 5700ish. I may be wrong, but I think we have seen 9 hole versions of this in recent years. For some reason it seems to be more acceptable if a course isn't the "full 18". Anyway, I think folks get the idea.
Ciao