For sure many modpacks nowadays have almost 100+ mods in them. Many people can't play a modpack with 200 mods and have good fps, so thinking around 100- mods should be a good start. By adding only 100 mods or less, more people can play and enjoy your pack and while playing fps will be at a good rate. How to make a modpack different and unique from others? Well, making a modpack is an "easy" step but it coming out as unique? Something that will surely make it unque is adding custom items, or ideas in it. Meaning: Making a custom map for your modpack or making custom npcs that you can trade and talk to. Adding a story to it which fits the whole custom map idea and gives it a more customized touch! Tools for doing this: world painter or in-game mod world-edit. Re-writting or renaming items in game can for sure give minecraft a new feel. While, for this you can use CraftTweaker, all information on how to use it is available on their site. (some knowledge of code is require...
A blog focused on minecraft. Builds, projects and future modpack ideas.