I think the combination of CFA and CMT would be great. Not only because of the charters but also because of the knowledge you'd get during study process.
When I decided to get CMT 2 years ago, my idea was just to put my previous TA knowledge in a good order in my head. But surprisingly, I've gained a lot more, what I was not aware of before. Intermarket analysis alone would be enough but there were also Kaufman and Connie Brown books, where you could find a lot of valuable practical information.
Actually, it's possible just to buy these books and read them without taking exams. It depends on personality. For me, the necessity to take exams is a disciplinary factor that keeps me concentrated.
I was fortunate enough to pass all 3 levels from the first attempt. Level 1 (multiple choice) is easy if you're TA practicioner. I did it very calmly and finished 30 minutes before the end of exam anyway. Pass rate is about 80-85%.
Level 2 (multiple choice) is easy, too, imho (again, if you use TA in you work). But the pass rate is about 65-70%.
Level 3 (essay) was a disaster some time ago. When I passed it in November 2004, pass rate was about 25-30%. I was sincerely surprised when they told I passed, taking into account that English is not my native language. The exam was tough, we had to write by hand a lot !
But as I know, MTA makes all exams computerized from November 2005 and that should help, imho.
Regarding Citigroup, yes they fired Louise Yamada, Ron Daino and other smart guys (I really enjoyed their technical reports), but that doesn't mean Citi doesn't use TA anymore. They outsource it from DorseyWright, who also are reputable guys in the field of TA. Probably outsourcing costs Citi less money.
Good luck !