No because I like having different things to rely on. For too long I only used either gjallarhorn or invective for everything. Invective usually for destroying mines in Poe, and gjallarhorn for every other boss. Now there's some variety. For a longer ranged strike, such as winters run, I'll probably take Boolean Gemini, whereas I'd take something like zhalo or telesto into undying mind to clear out mass waves of enemies. Now you can actually take the exotic that's best for the job, rather than the most op for a boss fight. Now it might be cool if maybe one or two old weapons came into each new destiny game, but some pretty different perks.