Yes, I would support the removal of the -10 event which could be quite annoying on a Homeworld.
(Only a Good or an Optimal Planet would not go Deadly with this event)
As for the population, I will run a few tests with AIC, as I would believe the reproduction rates are ten times lower in AIC than in the vanilla game. (Which means reproduction only occurs at the end of each year instead of each month) But I am not sure how the +x% of reproduction rate is working, and I am not even sure if my obversations are really correct and acurate.
Finally, as for the Heroes, they will need a facility slot I gather? Then it will make the decision a bit harder as you will lose a valuable slot which could have been used for, say, decreasing Maintenance in this system. (Or perhaps I am the only one who is ever lacking open slots for facilities?
) I do like them.