So, on pentamelded i150s again for a sec.
Scaling of accessories is really mild right now. At i150 you can reasonably expect to meld 28 VIT (44333) to Slaying accs (31 STR) as Taint said. i200 would be projected at around 40 STR or ~39 VIT. Barring crippling accuracy needs, melded is going to be kind for a while yet.