Yeah, I've taken the team approach since Day 1 of my career. At High Pointe I didn't have nearly as much help as subsequently, but I had the previous superintendent at Crystal Downs, Tom Mead, and a 23-year-old intern named Gil Hanse. [I was only 26 myself.]
Like George Crump, it's my choice which friends and associates to bring on site, and how much of their ideas to use. Some of my associates would be considered as highly as some of Crump's friends if they had designed more courses on their own, and most of them have WAY more experience at construction than George Thomas or Tillinghast had in 1917.
And as Ally says, there has to be someone in the lead. Bill Coore and Ben Crenshaw are the only design partnership I've ever seen where there isn't a clear leader -- they are both very deferential to the other, and it helps that they are sympatico about 97% of their thinking. Mike Clayton and I had a similar relationship, I felt we were usually on the same page, but I had way more experience than Mike at that point so I was still the final decision maker.
Ira, your question was different, but I don't know how well it would work. Sebonack was a bit of a mess because there was no clear decision maker and the client used that to triangulate between us. Maybe two young architects who aren't used to being in the lead role could collaborate well, and we have seen a bunch of cases of that recently . . . Brian Ross and Colton Craig, Keith Rhebb and Riley Johns, Brian Schneider and Blake Conant.
But, once you have been the decision maker for years, it's hard to share the decision making. I just want a defined role. I was happy to do the routing for Zac Blair and make a site visit and work on a handful of holes, but leave the final decisions to him and Kye . . . but it did bother me a little that I built one green they later blew up, even though there are four or five that I did with Kye's team. Likewise, if in my old age I work with my associates but don't want to put in 30 days on the road anymore, I would just take the second chair and contribute my thoughts and advice but leave the decisions to them, instead of trying to negotiate with them. There is just no room or no time for politics in a creative endeavour.