First of all, what's the reason behind splitting Italy? For me the only reasonable one would be to be possible to activate region by region, but as the preview kms are also visible in the stats I don't see it to be a very important issue. As the plan to introduce SPs routes is a far-future one, I think we better wait with the splitting. Splitting has a big downside, it takes much longer to introduce the routes after a trip in the .list files, making TM user-unfriendly. In my opinion we should split just where it is absolutely necessary (like FRA, DEU for example, where someone already had the intention to introduce 5th tier systems in the near future when the splitting was done).