Ive discovered a couple of what could be pretty useful kill setups for fox
The first one is jab cancel->dtilt->upair
The sweet spot of down tilt true combos into upair at kill percents and I've found that a good way to set this up is the first two hits of jab. On Mario this starts killing at about 110% and you can connect the dtilt until about 130%. On sheik it starts killing around 90% and lasts until 140% so it is a lot more effective on certain characters. It's not guaranteed but the window to shield is small so it could be a good mixup out of jab and I have successfully used it at a local I went to
The second is a full hop auto cancelled dair->rar bair
This starts killing Mario at about 100% from the ledge and can be true comboed until 130%. On sheik it starts killing at like 80% from the ledge and can last until around 120% although when you start getting to the higher percents you need to be moving towards your opponent when you land the dair. This one I really think could be useful given a well spaced dair can be safe on shield and I've seen a lot of high level fox players using it more in neutral.
All of the testing I've done has just been on training mode so I'm not sure how di affects these but from what I've done they do work in certain situations.
The first one is jab cancel->dtilt->upair
The sweet spot of down tilt true combos into upair at kill percents and I've found that a good way to set this up is the first two hits of jab. On Mario this starts killing at about 110% and you can connect the dtilt until about 130%. On sheik it starts killing around 90% and lasts until 140% so it is a lot more effective on certain characters. It's not guaranteed but the window to shield is small so it could be a good mixup out of jab and I have successfully used it at a local I went to
The second is a full hop auto cancelled dair->rar bair
This starts killing Mario at about 100% from the ledge and can be true comboed until 130%. On sheik it starts killing at like 80% from the ledge and can last until around 120% although when you start getting to the higher percents you need to be moving towards your opponent when you land the dair. This one I really think could be useful given a well spaced dair can be safe on shield and I've seen a lot of high level fox players using it more in neutral.
All of the testing I've done has just been on training mode so I'm not sure how di affects these but from what I've done they do work in certain situations.