I was messing around in training and i found an approach option that i feel could make up for our lack of a good approach bar spacing nair and bair. https://www.youtube.com/watch?v=HUevCn64xRA&feature=em-upload_owner
The sourspot of the ftilt is landing and they're being hit backwards. This can lead to a grab at low percents: around 0-40% (not guaranteed / Percents are character variant). After that percent window, you can followup with dash attack, a tech chase nair or RAR bair. At about 100% and higher, you can go for a reversed flip kick. It will connect offstage for the spike, but downward DI from the opponent makes landing it much more improbable. If the opponent misses the tech onstage, you can still go for a reversed flip kick to seal the stock.
The sourspot of the ftilt is landing and they're being hit backwards. This can lead to a grab at low percents: around 0-40% (not guaranteed / Percents are character variant). After that percent window, you can followup with dash attack, a tech chase nair or RAR bair. At about 100% and higher, you can go for a reversed flip kick. It will connect offstage for the spike, but downward DI from the opponent makes landing it much more improbable. If the opponent misses the tech onstage, you can still go for a reversed flip kick to seal the stock.