DCT tells you which gear your in anyway? Well everyone I've ever driven has.
I'm lost with comments about a gear indicator for the 6MT? The gear stick is the indicator!!!
It doesn't matter which gear you are in, only that you are in the correct gear at a given time to suit your needs. In a manual just reaching for the stick will tell you what gear you are in immediately.
The 6MT gear's are pretty close so I tend to run 1-2-4-6 when just pottering about, or gun it in 3rd then snick into 6th, or slow in 6th then straight to 2nd when the lights change
that's the beauty of a manual, you can do what you want...
....but I still want to get rid of the shift indicator, got esys just need a bit of spare time to do it!