What are the top 3 or 4 best and most stable Mega-Mods for SH4?

[Rikk Von Westhoff]

As someone who has long played and loved modded SH3, has played un-modded SH4 a fair amount since it came out and finds SH5 (modded or otherwise) to be beautiful, but rather rigid, overly complex and just not quite enough 'fun', could I get some opinions on SH4 megamods and which ones add the most without making the game too finicky or unstable?

Thanks Gents!

Rick