I think a lot of the Magus's features are just patches for the way 3.0 handled spellcasting in melee and in armor. And even still you feel like you are juggling between charging up spells for a melee touch attack, casting defensively, etc. Feels a bit clunky.
But the magus has an extensive spell list and can do a lot lot of casting.
5e doesn't care if you cast in armor or melee so EK doesn't grant features to let you do that. But like someone said above it is 80% fighter and 20% caster, You learn only 13 spells total and only 4 can be from schools other than evocation or abjuration. That is one for each of the 4 levels of spell casting you get. You can't fly or do some other "gishy" things until very late in the game.
That said, you can very easily multiclass into wizard after picking up your second attack at level 5 and seriously augment your casting ability if you so choose.If you go with school of abjuration you can actually create a ward like the 4e swordmage and use it to intervene when an enemy hits your allies.
The valor bard, the oath of vengeance paladin, and the pact blade warlock are other good options for the warrior/mage archetype. 5e offers a lot of options in this category.