My apologies if this is a bit hard to understand, i'm still lousy at bugs. ^^;

From looking at the new placement of the "lock layer's transparency" from the 
2.3 dev version of gimp, i'd like to suggest on how to improve it.
While i do understand the new location and look makes it easier to notice, but 
i think the new setup takes up much more unusable space than needed, especially 
if your using a resolution of 1024x768.
Wouldn't a more better way be to move the "lock layer's transparency" into the 
layers window beside each layer's visibility icon, something like a padlock 
icon? ^_^

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