Since I plan to deposit about $2500 into my Roth to fill it out soon, I messed with the contributions a little - changing from 50/50 international equity/midcap blend to 30/30/30/10 international equity/midcap value/smallcap index/smallcap equity. Since the options in my regular plan aren't particularly risky, I pretty much put all the risk in the Roth where I have a nice selection of funds of various types. I also transferred $1000 from my equity index fund in the 403(b) and put it into international equity, since I had $7k in equity index and about $700 in international equity and that didn't seem particularly diversified.
Next year I will be able to afford to bump up the Roth considerably - a large sum in January and then a smaller, regular sum that has not yet been determined. Probably $1000 in a lump and then $250 a month, or something. Not sure yet. I will be putting at least $200 a month extra into the 403(b), as well.