Question regarding Time Machine

I have a question about potentially backing up my iMac to two separate external hard drives using Time Machine:
Because I realize Time Machine is not capable of backing up to more than one volume, i.e. you have to keep changing the Preferences settings if you want to switch volumes, I'm wondering if it's possible (or advisable) to use Time Machine in a "staggered" method for backups.
For instance, if someone was backing up their iMac daily, they could go into the Preferences settings and choose one external hard drive for backup on one evening, then the next evening they could go back into the Preferences settings and choose the other external hard drive, etc., switching back and forth on a daily basis.
The reason I would want to have more than one backup is simply because our 2 Lacie external hard drives (which have extended warranties and are automatically switchable from the parent company if one of them goes down) have been experiencing some problems over the past year.  In other words, one of them has needed to be sent to Lacie headquarters on more than one occasion.  This is why I want more than one backup in place.
And yes, I realize there are more backup options then Time Machine; but when our iMac went down about two years ago, we were more than impressed with Time Machine's design in restoring the iMac very quickly.  It's something we are comfortable and familiar with.  So we'd like to keep with Time Machine as our backup software.
We just wish that Time Machine was capable of backing up to multiple drives instead of only being "attached" to one single drive.  (This really is incredibly frustrating.)
If anyone would like to chime in on this "backup staggering" question, it would be most appreciated.  Thanks in advance!

I will add to my reply too. Not to bash any company BUT I too had issue with 2 Lacie drives myself and said that was enough. I have switch to seagate drives, I have three of them running and paired together oldest one being over 3 years old and no problem as of yet.
I truely understand the need of a backup. I have years of back ups and 4 or 5 complete system back ups of the complete operating system- Guessing this is over kill but I could run the past 4 operating systems of apple OS at anytime!

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