yeah, this game is definitely not designed with soling in mind, but SE should really tweak it a little bit... I mean if something comes up as 'Easy Prey with low defense and evasion' it should be a cakewalk, not a 10 minute life or death struggle lol. I do have to disagree with one statement though:

You will NEVER make it above Rank 2 PERIOD!!! You must fight a monster with your level capped at 25 that you can do only mildly well with 6 people... It would be impossible to solo.
I have heard tale of DRG/WHM soloing the dragon before, so I think it can be done. I have also done it with a party that was capped as follows: 20/10 THF/NIN (me), 20/10 RDM/BLM (ls member), and 20/10 DRG/MNK (some guy we picked up).

3 members, and we wasted the dragon battle easily. We would have had a full PT, but everyone else was R2 and not on this portion of the mission. Of course the LS mate didn't know we needed them higher rank or on the same mission, and the BRD we had kept claining he had his RDM at lvl 70, even though his gear was sub-par, and he was R2. Long story short 3 made it in, 3 stayed outside, and we kicked some dragon butt as a gimped party... are what great stories are made of

I hope SE changes the way Mobs con to you as a character though, I'm tired of thinking I can kill a goblin that is easy with my WHM only to die ><