have replaced all of the windows in my house and only 1 window has any visible water damage, which is also the only window without any overhang.

https://i.imgur.com/COPbcs5.jpeg is what i was going for, but going with metal flashing will be troublesome.  none of my exterior brick sills have any flashing like in that photo, when i talked to some masonry  contractors that focused on new construction that photo was greek to them : )

how dumb or ill advised would it be to do that, but with https://www.masonrydirect.com/products/york-304-stainless-steel?variant=39454067130439 or some other tape, use two different pre fabricated metal flashing https://i.imgur.com/iKMpyB9.png , use the L flashing as a back dam, and the drip edge under the brick sill.  then tie it all together with liquid flashing.

better than nothing? waste of time ? if not a terrible idea, any suggestions for 12″ minimum tape? that stainless steel tape seems alright.