Dave is asking in a comment. It's a tough question.

I must admit that feature-wise I'm a pretty happy Radio user, it's a good blogging tool and a good development platform, it does what I need and much more.

Anyway, from what I hear supporting my Radio users and from what I hear around, here's what I think that would be interesting to do for Radio.

• Better images support: adding images to posts is a pain, especially for Mac users. Some kind of image tool that would allow to make image posting and management easier or to create nice pictures pages would probably help a lot of users to make their blogs more colorful (everybody has a digital camera today, and Radio is good at managing files, see below).

• WYSIWYG for Mozilla: Mozilla has some rich text editing support, which works both on Macs and PCs. It should not be incredibly hard to implement. Mozilla users are a minority, but with this feature enabled the number might grow for Radio users. Some alternative rich text editor solution (Flash? Java?) could be an alternative. Anyway it would be good to make text editing better and available to a wider audience.

• FOAF Support: FOAF is not wildly supported yet but apparently is gaining ground. A tool to edit my FOAF file and to add contacts to my network with one click would definetly make it more popular. Right now is mostly done by editing horrible rdf files with text editors.

• Leverage on the client side: afaik Radio is the only blogging tool which works client side. This can be a problem for some users (for example if you want to edit your site on the go), but it's a big advantage in many situations, where the integration with the local environment is important. Managing files on a weblog with Radio is just a matter of moving icons in folders, much better than everything else. Any feature that would leverage on this would make sense (i.e. images or files management, as suggested by Cristian).

HTH

Jake has just announced the official release of TrackBack for Radio. It's good to see new features coming for Radio users.

I already wrote about Hydra, the Rendezvous text editor. Within the last week I found two new cool kind of usage for this little but wonderful freeware app:

1. Meetings. I went to a meeting with a friend who also has a powerbook (a 17", quite a long way from my 12"). In seconds we set up a local WiFi network and were taking notes in synch on an Hydra file. Very interesting.

2. Stuff sharing. I regulary use two Macs, a desktop and a powerbook. This means that about 50% of times what I need is on the other computer. Moving files around is easy with file sharing, but often what I need to move is just a couple of lines of html or a URL. I have started keeping a Hydra shared file permanently open on both macs and I paste there whatever I need to share. It works perfectly, highly suggested for all serial mac users.

And don't forget to check the real time web preview feature. This is the ultimate collaboration tool, really great stuff!