30% nets him about 1 point every three levels, and he has 9 to go, so 23 would be his average, so already 1 point from the wing goes to waste. This is however, assuming the worst, that he gains a point after those 3 levels. It's perfectly possible for him to gain one on the first level or the 2nd one. Example: gains one on lv. 12, to 21, now he has 8 levels to gain 3, which is very possible. If this happens once in the three 3 level cycles, then he will probably reach 24. So unless you assume you will be unlucky, the wing is at least better off going to Titania, who can then cap spd quickly and use bexp.
I was talking about her joining in pt 3, how can she be in the mid-teens at 2-1? But yeah, she is pretty awesome in 2-1, certainly made my run easier, especially since Brom is so slow. Bonuses should also be a sidenote, since technically she doesn't start with them regularly.
Alright, I won't assume things then, let's just say 16 spd. That's still decent enough to avoid being doubled, and that arms race won't exist if you give him a bit of bexp (no speedwing is fine), which is significantly easier as a halberdier since he caps str def and skl very early (around lv. 7-8). Jill Tanks? Not from my experience, unless you baby her or give her a shield... Aran on the other hand, even with no special investment can take a hit and dish a strong one back out. And he doesn't suck when you level him. That's more than you can say for most of the dawn brigade (except Nolan who is awesome.)
In part 1 he actually will get hit fairly often in hard mode, making him unreliable because he sure isn't a general and "good defense" doesn't quite cut it when you're getting hit 70% of the time. He needs constant healing, not to mention he's an exp hog if you actually use him in pt. 1. Of course, the resolve beastfoe tactic in 3-6 is still viable. Robe should go to micaiah imo, but I guess if you beef Jill up that much she's great. I usually only use her if I had good transfers, but I guess if you like her go ahead.
My "epic" Aran was made with one speedwing and 3 or four levels or bonus experience... Doesn't seem like much of an investment compared to an energy drop, a seraph robe, and custom weapons. Anyway, I never meant to say Aran is better than Nephenee, just that he isn't bad, and if you get lucky with his speed (or give him a wing) he can come out awesome. As the original post said "I bet no one would come to DEFEND him" I'm not claiming he's superior in any way, just defending him. I hope I didn't offend, I also do like using Jill and Nephenee by the way. This is getting out of hand, so I don't want to argue anymore, let's get back on topic...
You could try an all female run, or a Ike solo challenge, that's always fun.