I've always and continue to say that 5e was designed to outsource more rules to 3PPs and internet homebrewers.No, there is a very much a difference of what the statement that 5e was designed with clear intent to ADD more rules later and with one that it was designed with clear intent to OUTSORCE THIS TO 3RD PARTY. You made the latter statemend and tried to change it when given pushback on it and request to provide evidence
Look at Bastions.
It took 10 years for WOTC to make Stronghold rules.
Because they ceded that design space to others.
Warlord and Tactical Martial?
Someone would eventually get to it.
Skill points?
Someone would eventually get to it.
Additional weapons?
Someone would eventually get to it.
Magic that isn't so brutal and heavy?
Someone would eventually get to it.
Epic boons that wasn't half done and unbalanced?
Someone would eventually get to it.
Legendary Boss monsters that are cinematic and provide dynamic combats?
Someone would eventually get to it.
If you listen to the podcasts, conventions, tables, articles, and interviews with 5e designers. Like the recently at Gamehole Con, you can hear them say that 5e was written to have all these optional modules module rules stitched on them for fans who wanted them. But if you look at WOTC's actions, schedule, releases, and effort, you clearly see that they didn't plan to be the ones making them.