I truly think you need some long range support.
I don't recall Black Templar having an objection against vindicator, or thunderfire.
Thunderfire is well known for being a good unit, and it can add a good long range firepower for cheap.
What I can tel you for certain, is that Land Raider with an assault unit and vindicators work well together.
At least for 2 000 pts^^
As there won't be super-heavy, I think they will sustain his firepower.
Vindicator aren't expensive, are scaring, and he will have to choose to destroy either your vindicators or your land raider
Did you think about vanguard veterans ? I had good success with them and a chapelain, and there are many builds (cheap with melta bombs as antitank, power weapons heavy, etc...).
I think the "First Company Strike Force" is a good formation, and you can run it fluffy with vanguards veterans or terminators.
I saw people suggesting Honour Guards in pods, but I really don't know.
2500 pts, the table will be full of models, do you think you can take a Chapter Master, you just have to say he is a senechal or whatever^^
His bombardment won't miss !
Do you have access to the Inquisition ?
If I had to make an assault heavy
SM army using Black Templars chapter Tactics I think I would do something like this:
CAD + FCSF
CAD:
HQ: 320
Helbrecht 180
Emperor champion 140
TROUPS: 890
10 initiates, 1 power axe, 2 neo squad in
LRC
10 initiates, 1 power axe, 2 neo squad in
LRC
FAST: 255
Stormtalon 115
Land speeder typhoon 70
Land speeder typhon 70
Heavy Support: 350
thunderfire 100
vindicator 125
vindicator 125
FCSF:
5 vv, 3 melta bombs, 1 power weapon jump packs 130
10 vv jumps packs, 4 powers weapons, 2
ss 265
5 sternguards, 1 melta, 4 combi melta, drop pod.
2395 pts
I did this list quickly, trying to be fluffy:
you have the Black Templars'
HQ, one in each crusader squad,
you have a good armored wall to protect your guys,
you have long range support,
you have anti flyers with the stormtalon
the
LS are here to be annoying units, cheap, quick, to destroy transport, to grab objectives and to make your opponent waste is long range firepower,
I added the 5vv with melta bombs to improve the anti tank of the army.
I think a power axe in the crusader squad to be worth it: hidden, hit strong, enough body to protect it, and cheap.
Do you really need a power fist over a power axe ?
Do you fight a lot of multi
HP T4 models ?
You need some long range.
Black Templar character seem ok for me (S6AP2 at initiative melee weapon ? yes !)
Helbrecht who give the special rules when you decides, etc...
I didn't take Grimaldus beecause,
IIRC, he can't join a unit with his servitors ?
Remember: I never played Black Templars !
May the Emperor show you the path to Victory !