In today's game do you honestly think that's even a good build?
16/4 will get you the feat you need and enough to actually say you have all the important once (I think) but:
- you have lost 4 caster levels really hurting you spell DPS and lost some of the big damage spells,
- you are on sorc who are what a good 4+ DC's behind wizard making your CC questionable,
- you don't have the crit profile, or melee power, or DS/Offhand proc rate that a real melee has.
A few years ago right at U19 that build was probably ok not quite bad not quite good but close enough that you could make a go at it but with the crit profile proliferation that has gone on in the last few years that build is very far behind real melees, and has given up to much of its caster side IMO. Am I wrong?