I naturally can't speak for other warlord fans, only myself, but I'm somewhat skeptical of fan-generated classes on DMsGuild, regardless of whether it is a warlord or not. I tend to stay away from DMsGuild new classes, and I'm not interested in warlords that make it a subclass of some other class.
Fair enough. Be sceptical.
However, that same sentiment would apply to
any class, and not just warlords. It will limit sales and reduce across the board, and so all 3PP classes are on an equal footing in terms of who will purchase them. And yet, the various warlord classes (and subclasses) see fewer sales than the
swordmage class. And that's despite both being updates of 4e classes, so the fact the market is former 4e players is also apprently not a factor.
I doubt that "warlord fans" are so very different from the norm of D&D fans that they'd be less likely to buy 3rd Party material.
Really, that concern is more applicable for classes being wholly generated for the Guild rather than based on mechanics seen in a previous edition. And yet brand new classes without the legacy of 4e are doing just as well if not significantly better than the warlord classes.
There's too much of a wild deviance in quality on DMsGuild for me to wade through and filter the above average quality content. It's unfortunate. I like the idea of DMsGuild, but its execution has produced a tremendous amount of crud.
There's a fair amount of deviance in quality in Unearthed Arcana as well. Heck, there was tremendous variability in the quality of books from WotC during 4e and 3e. But that didn't mean the entire RPG line didn't matter and wasn't worth reading.
To say nothing of TSR... oh man did D&D have some stinkers of products.
If you're unwilling to "wade through and filter the above average quality content" (or make it yourself) then that's totally fine. You do what you need to do. But you also waive the right to complain that content you want isn't available.
This shortcoming of DMsGuild, in particular, is one reason why I would like to see Wizards at least attempt a full Warlord class in UA.
Given we have the valour bard
and the battle master
and the purple dragon knight (plus several feats) it seems unlikely WotC will devote one of their rare Unearthed Arcanas to a topic they've covered that many times before. Not when they can instead focus on something they haven't given any attention to.
Why make a new class that's a variation on theme that's already in the game when they can do something entirely new that isn't supported?
Yes, a few people don't like the current options. *Shrug* You're never, ever going to make everyone happy. Every single class has people that hate it. They could make a dozen different versions of the warlord and someone would still say "but... it doesn't do X and that was my favourite bit!"
Classes take a tremendous amount of work and are significantly harder to design and balance than a new subclass. (They've been working on the Ranger since September 2015.) Each time they've done a new class it's taken two UAs to really nail down. And normally we only get one a month. (I expect we're going to return to that rate shortly and see a return of Sage Advice.)
( Plus, UA is really concept testing and not real new mechanics. It's where they throw out their craziest ideas to get mass feedback. If they do a warlord in that, it would likely be very experimental and different to see how people feel about certain concepts in the class. And it would likely not resemble the 4e version much on purpose, to see how people feel about that. I don't see a warlord in UA being very well received by warlord fans at all... )