Well, don't be shy. Just have a nice chat.
Technical coding is not a problem here. I have tons of ideas what to implement and (try to) optimize next at this point. My limited free time and running out of steam is.
Maps can be quite large, but there are other factors to consider. You have limited memory for all the textures and you need some in two variations (light levels), so the allowed map extents are big enough to make player bored with the chosen texture set already. You also have to plan carefully, so no location is overcomplex to cause a significant FPS drop and map doesn't have a lot of things visible at once (auto-closing doors are here to help with that).
Network play would be awesome, but at this point it would introduce more problems than add value, so I think it's best to focus on making single player experience as good as it can be.
Thanks,
KK/Altair