Robert's Rules of Order is not the pinnacle of human achievement. It's just a tool.
New forms of collective decision making require new tools.
I wouldn't ever run an endorsement meeting using joint application design (JAD). Just like I wouldn't use RRO for eliciting user requirements.
Source: 8 years on exec board for local party, former UI designer.
PS- In fact, we're always tweaking our bylaws. To be more fair, more efficient, more representative, etc. For instance, we now use approval voting to stack rank motions to endorse, for maximal fairness. Doing so completely short circuits gaming RRO and mostly eliminated drama around the process.
PS2- OMG, experiencing traumatic flashbacks. Using RRO to craft platforms, amend bylaws, etc is literally hell on earth. Transmuting trivial activities using any other conceivable methodology into soul sucking unending torture. Last time we amended our bylaws, we had rapid response team from suicide prevention hotline physically present to monitor our members and preemptively intervene as necessary.