in the past few months,at least two mods were added (applied energistics and xycraft), which added new ores. with xycraft, soaryn asked for early implementation because of his new ores, which should spawn, and which would be important soon. and applied energistics solved the problem by using nether ores in the future (or should I say, it shifted the problem to another position)
so, in the future, there will be more mods which add new ores. and the problem is always the same: those new ores always generate only in new chunks, not in the already generated ones.
so how about this: you allocate 100 block IDs to those future ores, give them different densities, veine sizes and different levels where they spawn. and they should look like smoothstone and turn into regular cobblestone when mined (irrelevant which miningsystem it is). and if a new mod gets added to the pack, you just swith a lever (in the settings) and the block-id switches from smoothstone to whaever the mod wants it to be, allowing that there is a new ore in an already generated chunk.
just already mined ores would be lost, as they turn into cobblestone during mining (like normal stone).
so, in the future, there will be more mods which add new ores. and the problem is always the same: those new ores always generate only in new chunks, not in the already generated ones.
so how about this: you allocate 100 block IDs to those future ores, give them different densities, veine sizes and different levels where they spawn. and they should look like smoothstone and turn into regular cobblestone when mined (irrelevant which miningsystem it is). and if a new mod gets added to the pack, you just swith a lever (in the settings) and the block-id switches from smoothstone to whaever the mod wants it to be, allowing that there is a new ore in an already generated chunk.
just already mined ores would be lost, as they turn into cobblestone during mining (like normal stone).