I am fresh HQ9 only 1 transport and 1 turrent is being upgraded to lvl9 right now. Rest of base is lvl 8. However I have already upgraded storages and research to lvl 9.
Soo my loadout is still lvl8 one:
4x repair droid
Air Support: 7x TIE fighter
SC: 2x snipers, 3x bikes
It is pretty simple loadout but its very flexibile, and thats why I luke it. And it allows me to do attack every 5 minutes which is great for conflict (I put all units for new loadout into building queues and half is built while I am attacking).
I use 2 different tactics:1.) Standard attack
I put both AT-ATs on oposite corners of base so they destroy shields without getting too much into enemy base (and dont walk too deep into turrents). Next to AT-ATs I deploy MHCs. Usually 2xMHC to eliteAT-AT and one MHC to standard AT-AT, but thats not set in stone, MHCs deployment depends on how turrents are set. Sometimes I put all 3 together then one side of shields cover has clustered turrents and other almost none.
I try to deploy forces so they dont activate SC or Dekas before shields are down.
After shields are down, AT-ATs nuke everything at range and MHCs are clearing turrents.
Than I deploy 5xHeavyStormtroopers, to clear spread buildings. Usualy one in each corner and the 5th where is needed. They should meet AT-ATs in middle.
or at least clear distant trash so AT-ATs dont need to walk much.
I dont use TIEs regulary, usualy I use them when ground forces are too slow at destroying storages, mostly contrabant safehouse, but sometimes when loot is big enough also credit and alloy.
I never use SC in standard attacks, as I am on ErKit and I dont want to risk being attacked with empty SC.2.) SquadWar
In SquadWar I use same tactics just with some exception:
TIEs - I use 2 TIE fighters to counter Dropship traps. I know exactly when to put them on to kill heavies right when they are deployed.
Also another 2 TIE fighters are used on SC when it is deshielded to destroy it before troopd get out. It is very hard, if not impossible to shield SC so, that AT-AT cannot deshield it without triggering. Range of shield+AT-ATs range is greater than SC triggering range.
Rest of fighters is saved and used where needed (if turrents are about to destroy some machine, or last seconds building destroy that are unreachable by ground forces).
SC - I use SC troops to counter enemy Droidekas, literally Opressor as for his ling range. Sentinel has short range so he usualy comes so close to one of AT-ATs that he gets 2 shoted by it.
This tac was very good when I was HQ8, but its being harder and harder as I am moving into HQ9. Also is very very fragile and careful deployment timing is a must, if one of AT-ATs is deployed too early or too late, it gets destroyed by walking deep into base. They must be deployed that they both destroy last shoeld in exactly same time. Also active Opressor does much dmg as of its long range so he does not come close enough to being destroyed by AT-ATs.