Add features when members ask for them, not before. If they ask for live meetups, add Eventonomy for event pages, recurring events, RSVPs and attendee management. If they want recognition, add WB Gamification for points, badges, levels, leaderboards and a rewards store, all of it free. If they want courses, add Learnomy and follow the Learnomy build guide.
When you want to charge, BuddyNext Pro adds paid plans, gated spaces, Stripe checkout, broadcast email, push notifications, analytics, white label, and auto and bulk moderation. Jetonomy Pro adds private messaging, polls, email digests, auto-moderation and analytics. MediaVerse Pro adds cloud storage, extra layouts, stories, documents and photo challenges.
Because each plugin is separate, you upgrade the one that hurts. Nobody needs to buy a bundle to fix one problem. The plugins page lists every piece and what is free.