Why specifically the bronze age? Its the favorite tier for many people (steam is fun!). Have you tried it in the last year or so?I'd also look into Thaumic Energistics
The bronze age is a waste of time and effort though
And what do you mean about the x-mod compat.?
Problem 1: Reika consistently implements code to block or hinder intended functionality of other mods. For instance, MFR has a router block that is supposed to interact with any slot of other blocks. Recently (yesterday?) Reika implemented code to block this for his extractor. He doesn't want the MFR block to function properly, as intended, with his block.
The "proper" way to handle this would have been to just say "who cares" about the router. Cross-mod issues aren't a specific modder's concern. But he doesn't like it, so out it goes. (I wonder how he'd feel if all the various modders decided to block his extractor-dusts from cooking properly in their furnaces).
Problem 2: As a modpack maker, you are not allowed to modify 99.9% of his mods to make them function harmoniously with other mods. MineTweaker is almost outlawed outright. Think the RoC extractor should be twice as expensive in resources so that people might try a pulverizer before "earning" it? Too bad. 5x output of all ores very quickly for everyone. Sucks to be the pulverizer.
The mods can be fun, and I generally recommend people try them out for fun, but the ethics are hypocritical and I wouldn't ever bother incorporating them to a public pack.