Re: Instead Of Levelling Up from 100...
TL;DR We're not a full year into this games life cycle yet. I fully expect that they will raise the cap further at some point.
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Every change that Respawn does, they do as an incentive to bring players back in at a later point. It's the same reason that you can expect them to keep removing and reintroducing content that we've already seen. It's also the reason the store is constantly in rotation, instead of working how you would expect a store to work.
They've nurtured a playerbase that mostly needs a consistent flow of rewards to keep playing, and scarcity is one of the tools at EA/Respawns disposal. It was probably less about deciding that 500 is enough for most people, and more about deciding that +500 won't help their profits in the short run.
If hitting level 100 took a lot more time than it actually did, less people would have been excited for this change. The typical player wouldn't care until after they reached the original cap. Make no mistake this change is motivated by marketing, not raw, unconditional generosity.
They will wait until this new cap has been reached by a significant number of people (i.e. people with jobs, not just the hardcore) and they will likely raise again.