Brother MacLaren said:
Over on the dragon thread, people are talking about how easily a dragon can protect its lair if there's a magic shop nearby where it can buy scrolls of spells it couldn't cast. On this thread, we see how powerful the druid is if there's a magic shop handy. Magic shops are a horrible idea. Let the characters succeed on their own abilities, the items they've won, and the items they've made. I know it's illogical given the number of items the PCs find, and various solutions have been proposed (e.g. inherent powers rather than items, as in Midnight). But magic shops have got to go.
Yup, magic shops in which you can tarde in the "outdated" gear are a problem.
Also, part of the problem are character builds which start at high level. A lot of them involve throwaway feats that are just boring to have until you reach 8th-9th Level when you can finally start getting into the PCs and getting cool synergies between the special abilities and feats. But it isn't that much fun when you got to wlak through all those levels with your unsexy feats like toughness, endurance, skill focus(basket-weaving) etc..
For example, when I first statred playing 3E, I had a Cleric. The thing is, I didn't look at the feat combo (well not to much

) that would make him uber-powerful in 8 more levels. I needed to survive, and I wanted to have some fun doing it. So I took a lot of subpar feats and multiclass. That character is a lot of fun. But I statred him from Level 1.
Currently I'm playing a Dwarf Paladin aiming for the Hammer of Moradin (I know, I know

). Also from Level 1. All the other characters are having a blast, and I'm doggedly persevering with the only thought been: "Just wait till I reach Level 13 and start laying the smack down!!" It's an excercise in patience.
Basically what I mean is that it is easy to prove that characters are broken if you allow two things:
1) Equipment Customization to Current level wealth. DMs who allow this without setting any limitation like single item caps, or even plausabilty of items deserve to ahve a 7th level war cleric or Druid (who thanx too spell buffs have an even easier time of choosing overpowered equipment) tearing through Frost Giant Jarls.
2) The magic shop. It is a staple of DnD that you can usually find someone that can make most scrolls and potions. Also many of the Wands were obtainable. But it used to be that you couldn't just order up the "+3 wild uber-wood full plate of maximum Doom" for your druid and actually find this item in stock. Or even find someone who could create it "and" was willing too. Seems like a patricularly monty-haul CRPG when you start allowing this.