Seriously, so many of the top comments from this thread are from people who will state outright that they don't play Legacy but then offer their opinion about how terrible it is to play Legacy.

This poster, for example:

I'm not saying "only midrange creature decks should exist", but it annoys me that legacy basically only allows "horribly broken" things.

Legacy is much more likely than Modern to have a game revolve around creature combat, removal, and interaction. Modern's the format of hyper-linear combo decks (and aggro decks that basically play like combo decks) because there's very little most decks can do to reasonably interact with them except for running a full suite of Thoughtseize and IoK (and the main deck doing that right now has daily threads in /r/ModernMagic about what needs to be banned from it).

Over on MTGGoldfish right now, the top decks by meta share in Legacy are allegedly as follows:

• Grixis Delver

• 4-color Leovold (a midrange deck if I've ever seen one)

• Miracles

• Storm

• Reanimator

• Grixis Delve/Young Pyro

• Death and Taxes

• Elves

• Lands

• 4-color Deathblade (Stoneforge and DRS)

• Sultai Delver

Those are the decks with more than 3% meta share. Six creature decks, four of which are fairly midrangey, a control deck, a control/combo deck, a creature-based combo deck, a reanimator deck, and one dedicated combo deck.

By contrast, on the Modern side:

• Grixis Death Shadow

• Eldrazi Tron

• Affinity

• Burn

• Dredge

• TitanShift

Those are the 3% or higher decks (with nearly 30% concentrated in the first three). Extending it out a bit so we have the same number as Legacy, we see:

• Hatebears

• Abzan

• Company

• Living End

• Storm

Three different combo decks, Company is becoming much more of a combo deck than it used to be, and Dredge, Burn, and Affinity are all extremely linear decks that are looking to interact with the opponent as little as possible and race to their win. Eldrazi Tron isn't much better, with a plan A of playing big creatures faster than the opponent can hope to keep up and locking out removal with Chalice. Three midrangey decks.