The following Dev Workshop can be found in its original form at: https://forums.warframe.com/topic/687147-fusion-simplified-part-1-coming-soon

Fusion in Warframe is one of the main systems that encourages investment in your Mod collection and Upgrading your gear. With calculated clicking and collecting, you can take your unranked Mods to top tier performers.

Right now our Fusion system has some confusing elements we’d like to correct.

1) Hidden complexity. There are a lot of under the hood ways to optimize fusion that aren't explained. Aside from the single usage of Fusion Cores, your Duplicate Mod collection can be used to fuse with bonuses for things like matching type, polarities, avoidance of exceeding desired rank, etc.

2) Progress Bar guessing game. There are no clear goals for next Fusion levels, all you're presented with is a bar and it's quite hard to predict how many missions and fuseable items are needed to advance ranks. This leads to a disconnect between cost benefit analysis as no cost presents itself.

It boils down to an overly complex system that has unclear goalposts, and this is something we want to fix.

The coming Fusion simplification will be released in 2 phases:

1) The first phase (coming in August) maintains the core loop we all know (find Fusion energy and use to rank up Mods), but it's much simpler at the Fusion level.

2) The second (coming later) will be written about in detail once we have assets to share, but essentially it is a more lore-amplifying and collection building version of Fusion.

Diving deep into the quickly approaching first phase introduces us to Endo!

What is Endo? Endo is Fusion energy incarnate. It is the raw resource that powers the process of Upgrading Mods. In essence, Endo serves as the simplifier in all things Fusion. All duplicate Mods can now be simply converted into Endo. Endo will now drop from enemies and missions where Fusion Cores used to.

Fusing with Endo makes the Mod Rank increases clear, as the system now only increases in whole Ranks. Partial upgrading with unclear requirements towards your next rank will no longer exist, and neither will wasted Fusion energy. The UI will tell you exactly how much Endo is needed for the next Rank, which gives you a clear goal to work toward.

Any partial upgrades will be refunded with equivalent Endo - so if you're like me and just haven't fully maxed that Primed Mod yet, your partial fusion won't be wasted. This also means no Fusion energy will be wasted when your Mod is fully maxed. No more eyeballing what Mods or Cores you use to prevent yourself from accidentally using extra.

You can expect this first phase to come in August on PC, and your inventory of Cores will be converted on login! We'll have more information for you closer to launch so you can see the change in action and know what to expect when it hits your inventories.