see said:
I have to disagree with Mr. Mearls, here.
The difference between 3.5 and 4 that makes it harder to not use a "battle mat" is that players can move their opponents. This requires the players to have a much more precise understanding of positioning of the opponents than in the sort of high-trust 3.5 game I ran in an text-only chat environment.
Granted, this works out to something minor like having to answer, "Is there a wide enough space between the forward brutes that I can use my power to pull the opponent wizard forward where the fighter can hit him with his sword?" But with the slowness of text chat, having to answer that sort of thing several times translates into a significant slowdown of the combat over 3.5, which was itself a slowdown over 2e.
Accordingly, I'm investigating online tabletop programs to decide if I'm even going to try to run 4e online.
Wouldn't this depend on class?
The rogue and the fighter definitely look like they use a lot of movement options either on themselves or the opposition whereas the warlord, cleric and the ranger seem somewhat bereft of these options mostly.
The warlock seems in-between the fighter and warlord whereas the wizard doesn't seem to have any at all.
If I was going gridless, I would actually restrict the amount of classes people would play or at the least, cut off the powers that focus on movement.
re: No of models
I think I was misunderstanding you. When you said 10-20 monsters, I thought you were referring to NPCs and NOT including PCs in that total.
However, as yourself pointed out, half of the time it will actually be 10 models and in fact, if you were overhelmed, you can actually decrease that number. Use elites and solos plus higher level monsters in the budget.
For a DM, for any standard encounter {defined in the DMG as laverage evel of party (+1)}, the numer of models can range from 1 (solo) up to 20 (all minions).
So, I don't think a DM has to be worried about keeping track of everything since by and large, the DM is the one that sets the encounters.
That would be another tip for running gridless. Use less monsters and focus on more elites/solos