Bottom line is if you never tell anyone that your base password starts with p455W0rd, then I don't think having a personalize system of 2+ characters to distinguish which system the password is for, and another 2+ characters to allow to reoccurring password changes would make your password any less secure, with the benefit of making them easier to remember. For extra security, add some ! _ - @ % etc characters to break up the 3 parts to your password. i.e. p455W0rd#02!01
Hi, please sign up for a system that I run, where I log every users IP, PTR record, username, full name, DOB, etc, etc, and PASSWORD to a nice database. Now I can begin work on cracking your other passwords.
I wish people would stop thinking that the systems you log in to are secure. This especially bad with the users who have one standard password, or the mysecret-slashdot. The ones who use apples01, apples02 are rarely better. Your system just adds a little bit more complexity.
I'm sorry, the only way to deal with the multitude of passwords today, given there is no wide-spread smartcard deployment, is a secure encrypted password DB stored on a portable eletronic device (eg phone, ipod touch, palm, etc, etc), and use the autogen password tool to generate new passwords.