Hiya!
The short rest mechanic has already been discussed as problematic. It's seldom to see 6-8 encounters in a day. With 1-2 significant events, the "5 minute workday" classes have a huge edge. Unless the DM forces the group onward, any time the group has time to stop they'll push for a full rest instead of a short one. If you have time for one hour, you usually have time for seven more. And even though they were unwise to waste their abilities too soon, those classes are often not punished for this...if you were to push them onward, you would be risking a TPK, so as a group you have to fall back or rest.
Yeah, this was in the OP's original #1 post. So...
This has not been my experience. I've had three of my 5/6 players play Warlocks over the last 1.5+ (!) years, and each time it's been fun to DM those characters. Their motivations were...personal. Each warlock "felt" like a more well-rounded character over "
I'm a wizard because, uh, I was smart and stuff so my dad sent me to learn magic". First was a Fiend Warlock. Next was a Fey Warlock. Last (who just died yesterday, at 4th level) was a Cthulhu Warlock. Each had cool back stories, personality traits, and, well, 'character'.
What does this have to do with the "6-8 encounters a day" thing? Nothing...other than those 6-8 encounters don't matter one way or the other into how the characters were each played. Y'see...IME, players of Warlocks don't focus on the "pew pew pew!" aspects of the Warlock Class. Each player focused on RP'ing his warlocks "patron focus", I guess. Because of that, they didn't much care for the hard-coded mechanics one way or the other.
Also, in my campaigns, I don't DM to "expectations of play". I DM to "expectations of the campaign milieu". My players know this (they should...they've all [but one] been with me for 16 to 30+ years!). My players know that if they just got the crap kicked out of them, they can and should retreat and heal up. Where? They know that I DM "to campaign expectations". They know that if they are in a rather active dungeon, resting for an hour without being discovered is a blessing...but they also know that in a mostly 'dead' cave system, resting an hour isn't a problem at all, and a full 'nights' rest shouldn't prove too difficult either. They
also know that if they are in an active dungeon and have had 10 encounters already...that trying to rest in the dungeon is nigh-suicidal without clever and expert consideration and planning.
So, a Warlocks "mechanics" relying on Short rests? Not my problem as a DM. If the player is finding it difficult to have fun playing his warlock because he's always feeling like he's "got nothing he can do"...then perhaps the Warlock class just
isn't for that type of player. To me, it's like a player wanting all the cool powers of a druid, but having no interest in RP'ing a lover and defender of nature who cares about animals and the natural order of the multiverse. If you and your DM don't want to enjoy (and put 'effort') into playing up the main focus of the Warlock class...the Patron...then
don't play a Warlock! It really is that simple.
^_^
Paul L. Ming