Well, my idea is more or less the following:
1) Analyze the current rules and cards. I'm collecting all of them on a DB to group them (here
btw:
https://docs.google.com/spreadsheets/d/1amZ9o2jqtz_m9sWGD88XfUbofb9A-W8ZvuupEYNHfyk/edit?usp=sharing ) and for a first assessment.
There are indeed a number of similarities and (even if the work isn't complete), I think there are wide margin to merge a lot of them.
I think almost nothing will be lost in terms of fluff and narrative support if we reduce the entirety of those (more or less) 300 cards to a 20/30 general archetype of effects.
2) create a substitute system that can be integrated as smooth as possible. So, for example, any effect that can be created (by terrain, mission rules etc. - the most common are those that allows to pick another Asset) can be directly converted.
Also, the idea is to uniform the effect throught armies: "Orbital Bombardment" will be the same for anyone, whatever they are Tyranid, Imperium or someone else.
3) The idea I'm propending toward is compose by 3 layer of "Stratagem" (in lack of a better name).
The first level is the Command Assett "Apocalypse". Any armies have them. Let's say there are 6.
Then there are army specific stratagems. Let's say 6.
Then we have the specific one, those related to specific subfaction. Those are already 2/3 in general.
Also, implement 2 hard cap: only 1 "Stratagem" to any detachment may be used any turn (to avoid stacking and deathball that benefit simultaneously by a lot of different cards), and any stratagem can be used only once a turn (to avoid that the most beneficial are used exclusively.
Add a simple conversion by point per point base (so, any Stratagem cost 1, any Detachment generate 1 Asset a turn, any effect that give a card provide 1 point, any effect that let you select a card give D3 point) and you're almost done.
Other small fixes will be to give any armies a specific selection of "stratagem" for the second tier based on their tactics (so Eldar will have the "Movement" ones, like Blood Angel, whilst Ultramarine will have those more tactical).
Another idea is to let the "stratagem" be somehow generic, and the specific army use them differently (For example, the "Replace Order" assett will be a generic one. Ultramarine can replace the order with any other. Blood Angel only with Move or Assault. Dark Angel only with Aimed Fire... and so on).
There are a number of intended consequences due to the mess that current Assets are. For example, the target will became only Unit or Detachment (removing the "3 unit" example): this means that using a Stratagem that target a single unit will inhibit the rest of the Detachment to use any other Assett.... or for example if you use a "Stratagem" during the Action Phase the same Detachment will not be able to benefit from a different "Stratagem" that applies at the Start of Damage Phase (like all those that provide Ignore Damage 5+).
Another intended consequences is that replicating twice the same "Stratagem" at a general and the faction (or eventually subfaction) level will replicate the fact that with deck you can use "the same" (aka: very similar) stratagem to different unit. As a practical example: imagine that any armies has the chance of having a free Assault Action. Astartes will have another "Stratagem" to gain a free Assault action (eventually with a bonus, but it's irrelevant now). Then a specific Chapter (like Space Wolves) has another "stratagem" to gain a free Assault action.
A standard army like Eldar can have a unit that have a free Assault.
Adeptus Astartes like Blood Angel can have 2 unit from 2 different Detachment with a free Assault
Space Wolves are able in the same turn to have 3 unit from 3 detachment gain a free Assault.
Basically, the "Tier" of different strategems allows to create the event of a duplicate stratagems by two cards... even with the hard limitation of 1/turn.
In the end, it will work similarly to the Strategem in
40K (that,
btw, I don't like at all) but with much more restraint, uniform rules between all armies (or, at least, rules that have a common structure), less bookeeping and no
CP farm.
Also, it will provide a little support for a more strategical counterplay.. forcing enemy to change his/her Order and than doubling down on a specific unit that cannot be protected later in the turn... and stuff like that.
Only issue will be to track what "Stratagem" any unit have used... but to be honest that's pretty easy: it's enought to have a list of 4-6-8 possible "Stratagem" for any army (subfaction - faction - universal) and use a dice of the appropriate size placed near the unit.
My idea should, as a final product, produce a single A4 (or A5) page for any different army that list a dozen of "Stratagems" tops.... and that's it. The rest stays the same.
I also think eventually you can reintroduce the old "Strategy" value for different armies that provide the initial number of "Tactical Point"... but honestly that's a minor issue. First and foremost I need to complete the assessment of those all.
P.S: right now the Assets listed includes all with the exception of: Eldar (any), Apocalypse general Assets, Caos (any) and Necron. Tau are in progress. All other armies are already listed... and you can already see a lot of overlapping.