Rounding edges without subsurf

Hi =) im doing a little project trying to get a WC3 / starcraft 2 style, and right now i have really hard 45 and 90 degree edges arround the base of the structure…

i would like to add just one vert to the corners to make them a little more rounded… i would subsurf but that would greatly increase my polycount and i dont want that =P

any suggestions would be awesome =D


Use a bevel modifier or bevel center script just to knock off the sharp edge


To round the flat corner:
The knife midpoints:

Then select the vertical edges in the middle of each face and Scale Shift-z it until you like it.

My 5 cents…