Chewbot
Perhaps you could be pesuaded to answer some concrete questions about combat mechanics? Inquiring minds wish to know.
Is the turns initiative, side or Phase based?
For clarification, an initiative-based turn, every unit has an initiative and move in initiative order. For concrete examples, see most rigid d&d implementations, such as Knights of the Chalice or Temple of Elemental Evil. In a side-based TBS, each side moves all of their units in turn, but the specific order in which they move their units can change. An example of this would be the old XCOM games. finally, in a phase-based game, every units actiosn are planned, then resolved simultaneously before the game pauses again and a new set of commands are inuput. The most recent example I can think of is Frozen synapse.
Do units have a facing? Will it matter?
Will units have different defense/ability values depending on what side you attack them from? will it cost action points to rotate your unit? Will d&d-style flanking, where having a unit on either side of an enemy to get bonusses be in effect?
Will units get weaker as they take damage?
Most games have no mechanical defference in the offensive/defensive values of a unit at full health and a unit at 1hp. I was rather fond of shadowrun 4Es (pen&paper) mechanic of a cumultative penalty to all actions for every 3 wounds received.
How many fancy special abilities can we expect on our units?
None? (Poo
) 1 ability on some units? 1-3 abilities on most units? spellcasters with half a dozen utility spells?
In an average, late-game large battle, how many units will each side deploy?
Are we talking 5-10? dozens? Full regiments of hundreds?
Will there be any mechanics in place to encourage not bringing the same 5-6 guys on every mission or taking as many units as you possibly can along?
Will there be any incentive to try for a harder mission with fewer, less experienced people?
How large will the battlefields get?
10x10 squares? 20x20? 50x50? 100x100?
Will units be able to equip items/runes/doodads/whatever to modify their stats/grant new/different attacks/abilities?
If so, will every unit be able to do this or only some? Can you give a concrete, statted item that might be in-game?
Will there be a lot of aura/AoE/ranged attacks, or is the game mostly melee?
How many types of terrain will there be?
Will standing on/moving through them alter a units offense/defense stats or movement cost? Or will they just be cosmetic?
Will there be any in-combat objectives to claim, or is this strictly last man standing wins?
If there are on-map objectives, will they give any bonusses/penalties while held?
What resources will the player have to manage?
You already mentioned people in the caravan. How about food? Weapons? Supplies? Morale? Mead? Metal ingots? Which of these can be gained/lost in combat?