I battled against a perfect zygarde and tapu fini takes it well (2hko after 2 dragon dance if adamant), plus I can count on mandibuzz.
Even cause I don't know what else I can play cause every time I said I wanna play a specific core or Pokemon, somebody come saying that it's shit, and I'm starting to finish ideas. Lol
And there are not many good mons that can use Sr. Lycanroc, Golem, carbink and I don't know if skarmory can get sr in any way right now.
The thing with speedy leads is that you can usually slap on Focus Sash on them and expect them to do work for atleast 2 turns. Midday Lycanroc can't do that here so you usually set up SRs and then your Lycanroc is dead while your opponent is most likely still with 3 pokemon on them. Tapu-Koko for example, which is awfully popular as a lead, has a chance at OHKO'ing Lycanroc before it even gets the chance to move.
252 SpA Tapu Koko Thunderbolt vs. 0 HP / 0 SpD Lycanroc-Midday: 133-157 (88.6 - 104.6%) -- 31.3% chance to OHKO
From what I've experienced Gigalith has been far more consistent. No where near as fast, but it has just enough bulk take a couple of hits so it can set up rocks and attempt to retaliate in the following turn 100% of the times. Heck, Tapu-Koko is straight-up forced out because it can't win the 1 on 1.
252 SpA Tapu Koko Thunderbolt vs. 252 HP / 0 SpD Gigalith: 76-90 (39.5 - 46.8%) -- guaranteed 3HKO
252+ Atk Gigalith Earthquake vs. 0 HP / 0 Def Tapu Koko: 146-174 (100.6 - 120%) -- guaranteed OHKO
A lot of other things can't take it out as well and are afraid of atleast one of its moves, that includes: Greninja, Solgaleo, Tapu-Fini and Tapu-Lele.
252 SpA Greninja Hydro Pump vs. 252 HP / 0 SpD Gigalith: 132-156 (68.7 - 81.2%) -- guaranteed 2HKO
252 SpA Tapu Lele Psychic vs. 252 HP / 0 SpD Gigalith: 94-112 (48.9 - 58.3%) -- 98% chance to 2HKO
252+ Atk Solgaleo Sunsteel Strike vs. 252 HP / 4 Def Gigalith: 156-186 (81.2 - 96.8%) -- guaranteed 2HKO.
Whereas none of them appreciate EQ/SE or getting Exploded on.
Case in point being: surviving at least one hit is exactly what you want it to do. Plus there's also the added bonus of Sand Stream's chip damage. If you find yourself in a situation where you can't afford to set up rocks, you can always just go offensive turn 1 and you'll still have 4 turns left to try and force Lunala out so Sand can break its Shadow Shield, and unless you're playing stall that should be plenty of time.
But then again, this all from my personal experience. If you want to use Lycanroc, then by all means go ahead and try it, you just might get better results than I did with it.