please read the thread as to why those aren't the same and do not provide the same functionality nor are they as elegant. most people in this thread are aware of those options and they were discussed previously.
it isn't the number of indicators that is the issue, people don't want *more* lower quality indicators obviously.
they want the clean, elegant, informative indicator that used to be just perfect and gave them all the necessary information and more information then either of the alternates you suggest without having to open a kludgy second window or another sidebar pane.
the sidebar pane doesn't show as much information nor does it show the status/activity per account, it is practically useless. the activity window can't be docked to the main mail.app window and it doesn't minimize/hide with the main app and has to be manually delt with every time you minimize the app. both solutions are half-baked at best.
it *was* perfect as it was. why did they remove it? why can't they add it back?
hope that clears up the issue even if you don't read through the thread.