I know, thats why i said from scotland.
Generally, when you talk about "from" and "to," they are inclusive of the elements that you mention.
Example: Pick a number from 1 to 10. This statement is generally interpreted as including the numbers 1 and 10.
If you want to be explicit in your meaning, then you can consider adding the wording "inclusive" or "exclusive" after your statement, to make it clearer whether or not you mean to include or exclude those values.
Example: Pick a number from 1 to 10, inclusive. Then it is without a doubt that "1" and "10" are valid values.
Anyway, the point that you were getting at is that yes, Rome controlled a large area of land at certain points in history. However, they didn't really "start" in 4000 BC. So, great, for a scenario about the relevant time period, yes, Rome should have a ton of extra land and even strong units to help them defend or conquer it, depending upon the timeline of the scenario.
For a regular game of Civ, though, where everyone starts in 4000 BC, an effort to effect some game balance is probably better than having a few "major" Civs and mostly "minor" Civs for the rest of the Civs.
As for adding promotions like Combat I or City Raider I, I think that doing so would actually make the Romans stronger. Those promotions would carry-over to Macemen, which are already a powerful unit. Effectively, you'd be extending the power of the Roman empire to a unit beyond their Unique Unit--so if the reason for wanting to change the Praetorian is because it is deemed to be too powerful, then I submit that assigning free promotions to the Praetorian unit, regardless of whatever base Strength value you assign to it, will make the problem worse.
A better balance might have been achieved by going with Strength 7 but keeping the Swordsman's inherrent +10% City Raider bonus, as this bonus would not carry-over to Praetorians that get upgraded into Macemen.
All of that said, I am quite happy with the Praetorians as they are now. It can be fun to play as the Romans and sometimes you just want a unit that can be a bit more successful than average in a particular era of the game (say, to get revenge on Monte or Napoleon from your latest Loss).
If you are playing against the Romans, you can either try to get to them before they hook up their Iron or else become their Friend until after you've researched Civil Service and have traded for Machinery. At that point, a Roman-controlled AI is actually relatively weaker than other Civs in battles, as the AI tends to continue to prioritize building Praetorians, even if it has access to build Macemen--probably due to the cost differential and their equal base Strengths confusing the AI. However, Macemen eat Praetorians for breakfast, so you will come out the winner.