If you actually did this with this much dedication, and ran at +0/x2 or x3 or higher, you'd almost certainly pick up two or three purples, which you could sell and cut your time by a half or two-thirds. The drop rate per purple seems to be one per 2000-4000 mobs. If you're really doing alignment missions solo every day with a reasonable team size multiple you should be getting a purple every week or two.
The mistake people who are trying for purples make is trying to rush through things and do as little as possible to complete the alignment missions. If your goal is purples, you will maximize your chances of getting them maximizing the number of mobs you defeat per minute.
In I19 Incarnate Shards will drop only from level 50+ mobs, so you will probably want to get used to running at +0, and not bother with -1 at all. Scrappers and brutes should probably run at +0/x8/bosses if they can take down bosses efficiently, while tankers should probably run at +0/x8/no bosses. Other characters should run at the highest multiple they can comfortably.
The mistake people who are trying for purples make is trying to rush through things and do as little as possible to complete the alignment missions. If your goal is purples, you will maximize your chances of getting them maximizing the number of mobs you defeat per minute.
In I19 Incarnate Shards will drop only from level 50+ mobs, so you will probably want to get used to running at +0, and not bother with -1 at all. Scrappers and brutes should probably run at +0/x8/bosses if they can take down bosses efficiently, while tankers should probably run at +0/x8/no bosses. Other characters should run at the highest multiple they can comfortably.
Stop making sense....