Last time I heard from him was 3 weeks ago - just sent him an email to see what's going on.
@Kirb
Regarding your questions:
<blockquote>Kirb said: -A conditions system for adjacent combatant units or objects and adding custom Actions</blockquote>
That should already be doable with abilities and their target/use requirements. There's nothing additional for this planned in the grid battle system.
If using abilities for this isn't practical, it'd require some additional special battle actions implementation which isn't part of the grid battle system (yet).
<blockquote>Kirb said: -Different Areas may limit or enhance movement speed or other attributes</blockquote>
Move costs for grid cells is scheduled feature - also grid cells using abilities (e.g. adding status effects) on combatants that walk on them is part of it and should add a lot of functionality :)
<blockquote>Kirb said: -Attack Cinematics</blockquote>
That should already be possible through battle events.
<blockquote>Kirb said: -Set-up Phase/Starting Formation</blockquote>
That's currently not planned.
<blockquote>Kirb said: -Grid-Highlighting</blockquote>
Classic Tooltip HUD use, at least when it comes to stuff like combatants. Displaying grid info to the player is currently not planned.
Adding new features (or changing scheduled features) is no problem - what Griffin posted was my feature proposal based on his request, if there's a need for additional/other stuff I can add it to the plan (which naturally increases the costs).
Like it is with group buy proposals, that should be handled by the representative (collecting/negotiating feature wishes and telling me about it) - if Griffin can't do it any longer (we'll see), maybe Kirb or someone else can take over.