This mod was developed to work with LOTS of other mods. You can use items/blocks from other mods in the user generated recipes, add them to custom ore dictionary entries, use potion effects from other mods, adding drops to other mod's drop tables, etc. ! This doesn't like to play around with NBT data (that's tricky to configure and the configuration files opt for ease of use over perfect customization.) This mod works perfectly well with mods like Hunger Overhaul and already includes built in integration for NEI ( All the custom cooking blocks have handlers) and WAILA (They've all got helpful state bsed tooltips, some of which are highly configurable.)
There's no need to build in explicit integration with mods like harvest craft when it already exists with a little configuration. With very few exceptions, you could configure this mod to duplicate other basic mods (like pam's) in it's entirety. It'd be a lot of work, however, as thinking of all that content and generating the art assets usually takes a good deal more time than you'd imagine, but it's certainly doable.
As for specific mod integration, that deals more with hooking into other mod's unique systems, example: Redstone Flux from Thermal Expansion, Aspects from Thaumcraft, etc.. That sort of thing can possibly come later if it seems appropriate, but right now the mod is still in beta.
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The good news, we're working hard on the big content patch and bug squashing has been going better than ever. It looks like all the game crashing bugs have been dealt with (fingers crossed) and most of the fiddly bugs (the "ohh that's not working right" type) are being sussed out as content is being developed. Hopefully we should have our first production release "soon" (tm), but it takes a while to generate all the content even if the mod framework makes that easy, especially when you've got work and class schedules to work around.
