A lot of those had meaning on why they were added such as the Haven and Hearth and Anno based resources.
They are great icons, but they look more like icons for buildings and less like icons for resources. Not to mention they would not do well transitioning into the mini icons shown in the city menu.
Of those show above I would like to keep the old way are ...
- Algae (Anno 2070)
- Bark (Haven and Hearth)
- Barrels (Famrville or Pioneerville)
- Baskets (Haven and Hearth)
- Berries (Haven and Hearth)
- Bionic Suit (Anno 2070)
- Biopolymers (Anno 2070)
- Bone (Haven and Hearth)
- Brass Instruments (because they match the instrument makers)
- Bread (Haven and Hearth)
- Bricks (Haven and Hearth)
- Bullion (Haven and Hearth)
- Candles (Famrville or Pioneerville)
- Candy
- Carcass (I spend time making that one)
- Carpets (Anno)
- Cats (Famrville or Pioneerville)
So yeah that's almost everyone of those. Persoanlly think the best icon/buttons look like this ...
http://www.thepioneertrail.wikia.com/wiki/Collections
Haven and Hearth, Anno and the "ville" series have really nice icons for their items which translate great into C2C ones.
In fact this book from Pioneerville would go great as a replacement for the book resource we have.
So the short answer is thanks but no thanks. However if you find any redundant graphics (buildings, techs, civics, etc) those would be good to be replaced.