Timelines need to be as short as possible, without of course ignoring important consultations and scientific data. Predictability is a key factor, like location in the real estate sector.
As for harmonization among the various levels of government, what's most important is reaching decisions so that work can begin. If one particular level of government is in the best position to get something done, it should be allowed to do so.
Lastly, it's essential to have predictable and useful regulation that takes the desired end into consideration. The regulatory framework has to be predictable.