What they should probably do is release stuff pre nerfed and then buff it into balance over time. Kind of what CCP does with Eve except not take a few years to sort it out
Call me overly cynical, but the reason they don't do that is because, flavour of the month item, people buy it, do well in the game. Hi Rez claim it was all an accident, nerf it to maintain their reputation as having a "fair" micro transaction system. Rinse, repeat. They don't have to do it regularly, but occasionally, having an outbreak of OP items can only be good for them.
Going into a rant now, so be warned:
This game never should have been F2P in the first place. Games in the past have always managed to remain on a normal model, make money and do well. The very idea of loading tribes up with 10 million weapons and skins and having a built in shop is slightly abhorrent to me, honestly.
Hi Rez have done a really, really good job of making Tribes: Ascend a good game but I really do question the business model. It works for a wacky game like TF2 but it doesn't feel like it should for a competitive game like tribes.
Anyway, I'll be playing on custom servers till they get this fixed. I am really glad they have added in the option for people to do so, that is, as far as I'm concerned, a very good move on their behalf.