giving singers more range only makes them as OP as archers.
you may do this, BUT how about having them deal a LOT less damage on range=2.

oh look, this may make civ6 almost playable, because without this. civ6 is ALL about archers, as in;
- research archers and have 5 of them as fasdt as possible) (only build slingshots, no builder/settler)
- never even once build any settler/worker/district/building (spamming archers is just better)
- only have archers and 2-4 cheap warriors, only to capture empty cities.
. only when you are blocked by coasts everywhere, build transport ships. archers easily protect them.
archer-rushes in groups >10 can only be defeated by larger archer rushes.
so its all about archers, and this ends up me having 50 to 100 archers on highest difficulty, having captured half of the world, before anyone has walls or crossbows.

but this only lowers an upper limit to this, it does not really address the issue.

I've played a few games with this mod and it's super fun! Great addition to the game!
Now it feels more challenging to play specially because of these nerfs to ranged units