Personally, I am not a fan of hex grids for ancient battles, preferring a square grid - but don't let that stop you.
I decided to opt for a square grid since I realized that is way easier to create than an hex grid (
https://russellphillips.uk/joy-of-hex-wargaming-hex-mat/). It also demands less space and allow to fill more efficiently the space with squared group of units.
I initially thought of using an offset square grid but I went back to a traditional square grid (like chess) to more easily identify line of sight (for shooting) and units orientation for charge and melee.
Your grid is also quite small (i.e. not that many hexes across - not the size of the hexes!).
I decided to represent the 45 HBW length x 30 HBW width by using a square grid with each square representing 3 HBW x 3 HBW.
For the deployment length which of the following conversion would you recommend?
a) Round up: 4 tiles (12 HBW) + 9 tiles (27 HBW) + 3 tiles (12 HBW)
b) Longer flanks: 4 tiles (12 HBW) + 8 tiles (24 HBW) + 3 tiles (12 HBW)
c) Longer centre: 3 tiles (9 HBW) + 9 tiles (27 HBW) + 3 tiles (9 HBW)
d) Round down: 3 tiles (9 HBW) + 8 tiles (24 HBW) + 3 tiles (9 HBW)
I personally opt for (a). I suppose it is better more than less in this case !!
A unit occupies a hex. I have units facing the edge of a hex, not a point.
I came up to the same conclusion after adapting to an offset square grid. I would allow generals (floating or not) to be with UG in the same square although.
Move 1 hex for infantry, 2 hexes for cavalry.
I initially thought the same, but I decided to maintain the original distances to stay as close as possible to the original balance of the game, as you suggested elsewhere.
I would recommend playing the rules as we have extensively designed and tested them. You are welcome to change the rules but don't look here for any approval in doing so.
For the sake of simplicity, I am rounding some distances to 3HBW multiples:
a) Terrains and deployment.
b) Command ranges: 9 (instead of 8 ) HBW, 12 (instead of 10) HBW and 15 HBW.
For all the other cases I created a system to allow +/- 1/2 HBW variation by modifying the position of the UG inside the square.
Thanks for your suggestions, I found them really useful.
Francesco