Idku, my name's Kaleb, the lead developer of NBGrove,
thank you for your valuable insight and the incredibly kind words.
Voice dialogue would be an incredible thing to add, and fortunately we do have female voice actors available. This is something I'll gladly discuss with the team.
Secret/alternative endings are in the works for our next game, we're aiming for hopefully 3.
In regards to character personality, I'll give you a little hint not many others know,
Our next game revolves around Grace Bailey, the missing girl in the game that Connor and Grace are searching for, the sequel begins at the end of Northbury Grove from Grace's perspective. The game will delve deeper into the mindset of a kidnapee and the effect it has later on.
In turn we'll see how Grace copes with these things and hopefully her personality shines through.