All Masters, Renderers, etc. should be objects, not static
Reflectivity uniform vars
Multiplayer
Modular GUIs
 - Make text variables uniform/ change text rendering method

Useful regex-expressions:

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private int location_(.*);
to
protected UniformMatrix $1 = new UniformMatrix("$1");
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super.loadInt\(location_(.*), (.)\);
to
$1.loadTexUnit($2);