Well, in LT38 it's 100% and, if it was regular and not team game, it would still a bit too fast for my taste. Especially with techleak. Actually, the default would be a maximum speed, I guess. Again, the civ tech rate is set for a single-player, where you want a feeling of a steady progress agains the computer. In Multiplayer, you (ok, I
)want to take some time to do things. In the other hand, the start itself does seem a bit too slow. Not regarding units, that is also at its maximum speed, could be slowed down even further. But the start itself...
As for delegations, if people are against "stronger players running more nations", it would make perfect sense if the said player actually conquered and submitted said nations and is getting partial control over them in exchange for survival and some score in the end. Then you also get additional element: possible betrayal / breaking of an oath, if the dominating party breaks an agreement or something.
Militarily inclined players wouldn't like this, but those interested in variety and politics would deeply and thoroughly enjoy it.
BTW, what happens if the original owner and the delegate log in and use /take command at the same time?