I make deck of each unit used in battle. When card is played unit is activated. Player suppose to chose which card(ergo UNit) he activate. However you can as well just shuffle all cards from both players, and have fast, random activation - which i like a lot.
Using of deck to activate is much better and flexible approach, than marking activated unit with tokens. For next iteration I make deck of card a default activation method.
from the effort point of view: You need to make tokens glue on hard cartoon, otherwise a thin paper is not practical. Cutting big rectangles out as cards are much easier to do. And they serve as stats reminder as well.
====================================
Ambush - what you expect from ambushing model? ley say tomb scorpion. To dig out of sand in the middle of hot zone and kill thouse pesky wizards/artillery, or flank charge elite units.
Placing model 12" away from battle cauldron, not being able to attack when you emerge, having to waste first 2x rounds, is ... not very an ambush.
let..
Ambush - at the end of each round (including first), mark a point on map, and then roll D3. If roll is equal or lower than the round number, the unit emerge in chosen place and may immediatly charge.
so.. Scorpion may fail to appear in 1st or 2nd round, but he will for sure create some impact in 3rd. Risk of having unit do nothing for 2 rounds(half of a game!) is a big enough penalty.
================================
Small Target - -1 to be hit by shooting attack. same as old Stealth. F.ex. the swarm unit should have it. It make no sense that arrows ar such effective in killing swarm of rats.
=============================
you should be able to freely move with Advance through any own units. This would solve in elegant way heroes movements / being an obstacle.
=============================
if Unit has multiple melee weapon, it choose one of them.
Necrosphinx is OP. And he should makeup his mind whether he mop the infantry, or trimm beasts head.
=============================
all Deadly(3) are change into Deadly(d3) - remove "affect single model" wording.
=============================
target need to be in unit front arch, at the time of activation (before pivot)
====================
Flanking
if half of your unit at the start of activation, is in target front arch, after pivot, then its not a Flank charge. *
AND
flanked unit is striking back with Devastated amount of attack (half) [if unit dont have devastated state (hero,monster), then full Attacks]. Charger has +1 to Combat Resolution.
(* i hate this:

)

====================
i think i would like to play as Lizards army now
