Brighter Indicator bulbs on dash? Done at last!!

[Fazerider]

I'd be wary of sticking brighter bulbs in: aside from the extra heat they are then distractingly bright when riding at night. LEDs might be some help, perhaps a little brighter, but they catch the eye more because they switch on and off instantly rather than gently warming up and cooling down as with a filament lamp.
Another alternative is a sounder of some sort to make a click each time the indicator relay operates.