This is definitely not a standard design, but it tries to come close.
Non-standard design features include drives interpolated to be between A & B drives, and a 300 ton semi-standard hull, sized and priced to fall between 200 ton and 400 ton hulls.

The Hull is based on an attempt to expand the standard hulls and linearize the discounts. The 100 Ton Hull and 400 ton hull have the same discounted cost as CT LBB2, and the rest fall more or less on a line passing thru these two points. The discount is roughly 7.27% per 100 tons below 1200, that gets you from 100% cost at 1200 Tons to 20% cost at 100 Tons. But it is rounded to make the MCr cost an integer. Each hull has room for a set of drives giving 1/1/1 and the rating 1 Drive table lists the cost for Drives appropriate to each hull.

A couple more things I think I could do is to add fuel for J-1/P-1, and a bridge. Then you could select a base hull for a 1/1/1 ship, and know how much hull remains and what the base cost is.
Non-standard design features include drives interpolated to be between A & B drives, and a 300 ton semi-standard hull, sized and priced to fall between 200 ton and 400 ton hulls.

The Hull is based on an attempt to expand the standard hulls and linearize the discounts. The 100 Ton Hull and 400 ton hull have the same discounted cost as CT LBB2, and the rest fall more or less on a line passing thru these two points. The discount is roughly 7.27% per 100 tons below 1200, that gets you from 100% cost at 1200 Tons to 20% cost at 100 Tons. But it is rounded to make the MCr cost an integer. Each hull has room for a set of drives giving 1/1/1 and the rating 1 Drive table lists the cost for Drives appropriate to each hull.

A couple more things I think I could do is to add fuel for J-1/P-1, and a bridge. Then you could select a base hull for a 1/1/1 ship, and know how much hull remains and what the base cost is.