@desolutionist Unless you are running a mono-colored deck or colorless lands, like darksteel citadel, that don't help your colored spells, there's no way you're beating a 4x Trinisphere shops deck without gunning for it specifically at the cost of all other matchups. With 4x trini in the meta, you either ran FoW or you died, end of story. Strip, Waste, Crucible, Smokestack, Tangle wire made sure you NEVER hit 3 mana.
We have FoN now, but that just means your option is to run an 8 FoW/FoN deck, the trinishops mirror, or don't play magic. MAYBE dredge, but that's because of the 8 main FoW/FoN again. Nothing else viable could compete in a 4x trini meta.
Not to make this a trinisphere thread, but to counter the argument that you can beat any card as a 4x, while remaining viable vs the rest of the field, if you "plan for it." Some cards are so warped, there's no possible plan but to play it yourself or be pidgeon-holed into an 8x FoW/FoN deck. What if you don't want to play blue?