This!!! Noone needs anything more than this! This is exactly what we (GO) heavily promote since the banwave!
Now try to read the following with understanding, cause this are thoughts that come from personal experience 
Multiaccounting or accountsharing ruins strat and ruins factions that use it. Not because of bans (although we have seen that before), but because it makes single members inactive. They "don't have to" do various stuff, they do not engage in whatever happens on Strat. They don't have to, because someone else is doing that for them.
In early iterations of Strat the resources (troops and gold) came from players only. That meant that large numbers of faction members could grant you extensive resources. The members were just sitting and farming, and their only job was to dump stuff to the leader or the fief. Most of clans had certain of number "dead souls" i.e. just farmers, players otherwise inactive. And if this guys were inactive it means that they were not available for any action. At that time accountsharing was borne - solely to dump god and troops, and transfer it on map.
Over time more things had to be done on map and in game (I mean strat). The game developed. The economy appeared and was improved. The map itself got geography and now you cross rivers by bridge and avoid mountains (it wasn't always like that, remember?).
And one day the most important change ever was introduced - Startegus Ticks. From that moment on the "dead souls", inactive farmers got completely obsolete. Beacuse money is earned in trade (made by guys active on strat), and troops come from players active in crpg. So the clans focused on actually active players. And since they are active - there is no need to access their accounts. They can easily do it on their own. This, combined with deterrent factor of banwave and general condemnation of accountsharing made it really marginal in today's strategus.
In addition there is more "jobs" in strategus - army leaders, caravans, protection of fiefs, name it. So the active guys actually
have something to do in strat (again - it wasn't always like that,a nd still is not enough in this Strat) . So the people get involved, and get interested. And so they do stuff themselves.
And that means LESS WORK FOR LEADERS, which, trust me, is important if you want to run an effective clan AND have a girlfriend.
But I still agree with Dave - there should be some
built-in tools for faction leaders so they can control members . Why? Cause this is a team game. A lot of people - that are more or less involved and interested in Strat - work on the success. And if one day there is a
critical situation, and one of your players disappears from start for few weeks to go for vacation, play Skyrim, is sick or sent to jail (yes, it happened to us once
), the leaders should be able to make some action on the account of that player - even if is only transfer of gold or army to another guy to just to protect the resources. Preferably, without accessing such guy's account. Otherwise work of meny man is fucked by on person, and that is not ok. It should be somehow "expensive" and used as the last resort - just like we all avoid quickmarch as much as we can.
AND THIS IS THE SOLUTION WE PROMOTEYou may say "yes but you still may login to move other guy on the map and cheat the entire system this way" Yes. But would you really want to, if you play with bunch of really active guys (so they can do the job without your extra effort), risking ban from Strat, condemnation by community, and somewhat ugly feeling that you cheat in video game?
My personal anwser is NO, and I know that it is shared by my teammates including all leaders of GO. And if there would be a "legal" way to do certain things on strat in critical cases - that would remove the reason for this kind of shit even more.
This game has changed a lot since its original introduction and I would love to see i changed even more. This community matured too (I really think so, however weird it sounds) and certain things are more clear for all of us now then 2 years ago.
Now you can rage on, just keep in mind I said all of this in good faith.
