Despite some of my negativism on his title reign, I really do like the John Cena character.
I think he should be put in a fued with Edge. That would be great. As far as I know, Monday's 6-man tag match was the first time Cena's been in the ring with Edge. (unless I'm forgetting something)
I got to thinking about it, and I think those two could have some AWESOME matches, and a pretty good fued.

Any other ideas/comments on John Cena?

I would like for Cena to keep feuding with Kurt Angle for a while -- at least for Taboo Tuesday and into Survivor Series. Yeah, I know that means another three match feud, but it can do a lot of things for Cena. I've been telling folks that no one is going to beat Cena by trying to out Brawl or out Thug him if you look at the Cena gimmick/character that way. It was proven with Angle at Unforgiven. Yeah, Angle won but not by out brawling him. Kurt won because the Ref came to at the right time to call the DQ. For Angle to come close to winning -- he's going to have to out wrestle him. Kurt's going to have to stay on the mat and keep Cena from Brawling. This will open up Cena's move set -- which is what most of the fans that don't like him seem to like least about Cena. Cena can actually mat wrestle (check out his early matches on SmackDown or if you can get a copy of some of his matches in the OVW). Having a long feud with Angle will broaden and deepen Cena as a skilled wrestler and that's really needed.

After Angle, it would be fun and interesting to see feuds with Edge and HHH. I think both of those opponents would be pretty awesome to watch.

anything he does is HOTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT