I have experience recording and mixing metal and heavy rock stuff.
RECORDING:
Use plastic, rubber, or woode bass drum beaters.
Use a Flam patch on the kick head. Unless they want an over-the-top "Slipknot" or "Pantera" click. Then use a metal patch, like the Danmar.
Deaden the kick more than usual. Too much resonance will carry over to the next kick hit and smear the "punchyness". But not too much!
Use Nylon tip sticks (if the drummer doesn't mind a bit of nylon transfer to their cymbals)
Use clear heads on the toms. Coated heads warm a drum and the attack is dulled.
MIXING:
If you use compression, use slow attack settings, otherwise you'll squash the attack "click".
Mix the percussive instruments a bit higher than you might otherwise.
You'll want to boost the highs around 4k-6k a bit more than normal for the toms and kick. Probably with a parametric EQ. But don't use too narrow of a Q, otherwise you'll make it sound fake and "EQ'd".
Also, apply "corrective" EQ before compression and "effect" EQ after compression. In other words, kill sub-harmonics, overtones, nasty frequencies before compression. Then after compression add the high end boost I talked about. As well as any other flavor you desire.
If the toms sound too much like "classic rock", you'll probably want to scoop the mids on the toms a bit. Probably around 220hz-400hz.
But don't go too crazy boosting and cutting. Try to be moderate, but effective!