Yo! It's been a while since I've posted anything, so here I am once again
Recently I've gone through the long process of ing, Installing, and Backing up every ranked osu! standard beatmap. This also includes making a separate osu! install (so that I don't mess up my original one), pruning out the non-o!std maps, and getting rate-limited about 10 times 
It took a lot longer than it should have, but in my opinion, it's honestly really worth doing.This post was made to show the process of obtaining every ranked osu! map, and the benefits and disadvantages of doing so. I hope this is useful to someone ~
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Prep:
Firstly, you'll need to decide whether you're going to add them all to your current osu! installation or make a new one. If you're fine with filling up your current install with 82k maps, then go down to the next paragraph, otherwise, there are a couple of extra steps. the latest osu! installer from Death:
ing:Death wrote: 1v3g5e
The only real drawback I can foresee with this is that it might mess up your file associations. Meaning if you click on a beatmap or skin to open it, it might open with the wrong copy of the game. In theory it should open with the last install you played on, but that still means you need to which one that is. This can be avoided by only importing things by dragging them into the osu! window.
Next, ing the maps. In my experience, the best place to ranked osu! maps in bulk is from Elessey, the creator of that project, awesome work!)
Installing:
Next up is actually installing the maps, believe it or not, it's not completely straight forward. First, you're going to have to extract any compressed files you've ed (for example ZIP, 7z, or RAR files) into your osu! songs folder, which can be found in the folder where osu! was installed. You'll only want to do a year or twos worth of maps at a time to minimise the chance of crashes and such, but if you have a beefy computer feel free to try more. Once you've extracted a set of maps into the songs folder, either start up osu! and go into the song select menu, or if you're already there, simply press f5. Once the beatmaps have finished processing, I'd recommend deleting the non-o!std maps before doing another year. To do this, search mode!=o or mode={gamemode} in the search bar, right-click on one of them, and click "Delete all visible beatmaps". It's very important to make sure you only have non-o!std maps visible while doing this. Also, I'd suggest adding additional search such as lenght>60 for example, to get the number of visible maps close to 100. If you try deleting too many maps at once this way, you risk freezing and/or crashing your game. Then all you have to do is repeat these steps until you've got them all processed into osu!.
Finishing Up:
Once you've done all of that, you're basically finished! You'll want to wait for the Difficulty Calculation to finish, then search status!=r into the beatmap search bar. If any maps show up, just click on each difficulty with the Global Leaderboard selected and they will update their statuses to ranked. When I did it there were also a few "de-ranked" maps, as in they were ranked and then sent back to the graveyard, and some maps that were changed to loved, so you may want to delete those too. If you have osu!er, you can now open the osu!direct menu and any maps you've missed from this process. If you don't have er and you believe you have some missing maps (like me) then um... goodluck! Since you've gone through all this trouble already, it'd be a good idea to back up your songs folder (or just your whole osu! folder) onto an external drive just in case. This may take anywhere from 3 - 10 hours depending on your computer and external hard drive's speeds, but in the long run, I'd say it's worth it.
- Access to the entire library of "official" osu! content to explore
- Infinitely easier score farming/map clearing ability
- If you're an inconsistent player such as myself, it gives you a great opportunity to play a very large variety of maps, rather than the usual tv size pp maps
- Much higher chance that you won't have to a map while spectating or during multiplayer
- Never run out of new maps to play
- Song folder is about 200GB of storage. (This includes BG videos)
- On average to lower end computers, there's a chance menu loads could be quite a bit longer than usual (a few seconds sometimes, rather than almost instantly like normal) due to the 80k+ maps. Using the beatmap search is also a struggle most of the time
- Overall performance of the game seems to be the slightest bit lower (an additional 2ms and such ;-;), and for whatever reason, requires an additional universal offset on top of the one I had before
- Will take a very long time to set up if you have slow internet/slow computer, ing 2021 will be extra slow but for other reasons (more details above)
- Reprocessing beatmaps with f5 will take forever, may want to unbind this key or something if you think you'd press this by mistake
Man I always end up writing too much
Overall, unless you play osu! on a toaster, I'd highly recommend doing this at some point when you have some free time. Actually installing every map is a pain, but once you've finished, it's very enjoyable having them all. Thanks for reading, have good one 
