Giltonio_Santos
Hero
The term "Big Tent" comes from politics, a sort of Americanization of "Broad Church" in British politics. It means a political party that contains a wide range of opinion, such as the Democrats under Roosevelt for the New Deal or Labour under Tony Blair. Still, a "Big Tent" has limits, because the Party will have platforms and goals not everyone will be able to sign up to pursue.
I don't thin WotC has ever promised a Warlord, and there is definitely noagic economy in the pipeline: as Mearls put it, for 3E and 4E, everything was ad hoc and meaningless from WotC side, and there is literally zero value above what a DM can make up on the spot.
Anything above level 11 or 12 is effectively Epic, since the vast majority of tables don't go above that level. Crawford has gone so far as to call out any Subclass features above 12th level as pure theorycraft that will rarely see any use. I wouldn't expect to ever see anything more.
It's not that I miss this or that promise of support, specifically. I'm not calling WotC on a failed promise to deliver epic-level play or a classed warlord. What I'm saying, and I know that this is a strong statement, is that this tent is not big at all.
As written, I don't feel like 5e supports more than a single playing style, the one made possible by RAW PHB. Besides that, it pays lip service to a promise of diverse gameplay with 15-20 pages of the Dungeon Master's Guide.
I enjoy the playing style that 5e enables, and that's why I've been playing it almost exclusively for the last 5.5 years (more, if you consider the fact that we moved to 5e more or less definitely when the last playtest was released), but can you think about people that believed WotC when they said that tactical gameplay would be a real option? If tactical gameplay was a dealbreaker for them, they probably abandoned the ship by now, but they could well have supported the edition for 1-2 years while waiting for something worth their time to appear.
I believe the same is true for almost everything we could mention as a different playing style. 5e can't do gritty properly. It can't do low-magic properly (and the rules for buying/selling magic items make it appear like it cannot do really high magic properly either). It can't do tactical properly. It can't do different technological levels. And its chief designers are shunning away from even releasing a character class that creates supernatural effects through anything that is not a spell/spell slot.
Heck, the monk in the PHB would probably fail to pass the Arcana Unearthed test in 2019. The warlock would be threatened as well. The published artificer, which is the most innovative thing to come out of WotC in the last 5.5 years, is uninspiring, to say the least. I'm the lucky guy here, some sound rules for psionics is probably the first thing I really wanted from WotC that I believe they'll fail to deliver. But big tent? Really? No, I don't think that's the case.