@Iora: I don't main Ragna, I only sub him and I'm sure SKD can give you better tips if he actually responds again. lol If he doesn't though, I can give you my input.
1: Fixed* In all honesty, not really, 2C into Dead spike puts you at -10... Dead spike is very easy to jump over on reaction or from that close just mash out of. Shit gets worse for you too if the opponent is Instant blocking waiting for an opportunity to mash like that. Not to say dead spike isn't useful in pressure, but its a little iffy there and you should definitely use it sparingly.
2: 623C, ABC, Dash, 5C, 5D~Dash, 2C~6A, Jump cancel, J.D, Jump cancel, J.D 623D~236C~214D is a pretty good one. There is more you can do in the corner but thats for mid screen.
3: Whenever you wanna go Iora, just message me on here, I'm normally around and can hop on. I just hate my net. lol
@Stickbug: I am there! For sure, I'll also probably bring my ps3.