

Conspiracy Theory: Daredevil, Fearless Fighter wasn't supposed to be Daredevil.
This is something I've been thinking about since the card was revealed. I love [[Daredevil, Fearless Fighter]] as a concept and I do agree it thematically works with him getting hurt all the time, but there is no way he was the best character fit for this card mechanically.
Penance is a more obscure character but if you know the original Civil War plotline he should be familiar. He does have a card in the set, but as [[Speedball, New Warrior]]. This was his persona before the incident that started the war. Speedball's flavour text is likely a reference to this.
Penance's ability was kinetic shockwaves amplified by personal pain. The more he hurt, the stronger the powers. To that extent his suit was basically an iron maiden with spikes on the inside. I don't think I need to explain why it's appropriate for Daredevil's first ability. You hurt yourself to deal remote damage. Daredevil's second ability is a little harder to parse but it was likely just there as a way to make the deck more functional.
Penance is probably one of the more recognisable figures to not get a card (at least in this persona) and out of the others, they pretty much all fall into one of the categories that seem to be absent enough to indicate they're getting their own set (either Supernatural, Cosmic, X-Men, or likely What If?). So my conspiracy theory is that the card was originally designed as Penance, and then to make it more appealing they slapped a Daredevil skin on after the fact (likely before designing the Jumpstart pack in full). As a result Penance got overlooked from all sets.
Thank you for listening to my TED Talk.