It's painful, and a lot harder than just starting as Kazan or the Mughals who historically just shouldn't have the same blobbing ability. If you want to play a Western nation and World Conquest (and I say Western, because at least Ottomans + Russia have CCR/Absolutism bonuses), you have to tag switch several times or become Emperor for your run to not be extremely painful to take advantage of all the Administrative Efficiency bonuses you can get. Tell me which one you conquer more land with, I am willing to bet it's the Horde.

Here's a challenge, load up a campaign, start as Castile > Spain and then start as any Horde of your choice. Yet in the game, 4/5 of these have less mass blobbing ability than any Horde, including Sarig Yogir (I am serious). In the context of EU4's entire timeline, the 5 nations that could feasibly conquer the world are 1) GB, 2) France, 3) Spain, 4) Ottomans, 5) Russia and in that order imo. Any sort of WC/mass blob/wide play as a Western nation now is extremely painful and unpleasant especially compared to what you can do with other nations.

It's something that has really bothered me with this game for a while, and I am jumping on the back of what the legendary BudgetMonk said in his last stream. Here goes what might be an unpopular post, but one I feel very strongly about.

Eu4 best country for world conquest