I too am a glorious rainbow.
I ended up pulling the EGLD from my Pz S35 and putting in binoculars. The S35 already has a 1.1 second aim time, which is almost twice as fast as its reload time, and for which a 9% reduction in aim time likely has not helped me all that much. The binoculars should help it stay more competitive with sight ranges when I get pulled into Tier 5, and be a decent advantage on same/lower tier games (as I tend to use the tank by running to decent cover and mugging people).
Thought about pulling the EGLD from the Matilda, but that is a case where the reload time and the aim time are roughly identical.
Still keeping EGLD on tanks with higher than a 2.3 second aim time though.