Kerrick said:Monte Cook mentioned a different way of doing metamagic in his latest blog, and I think it's good idea. Basically, instead of a spell being adjusted upwards by x levels, you have to burn up x spell levels to cast the metamagicked spell, where x is the level adjustment.
Unless you and I are reading a different blog, Monte said:
metamagic probably should have involved combining spell slots of the same level rather than utilizing higher level slots, to cut down on the number of lower level spells to keep track of
(emphasis mine)
This is pretty different to the method you suggested, and is much closer to the Arcana Evolved' 'laden spell' form of metamagic. I don't know if this would change Nifft's assessment (it's still nova-ing, after all), but I think it's worth mentioning.