upstart said it perfectly. i agree with the notion that the cartridge is the means to a better end, not something we should be emulating. our tiers and clauses are fully absent from cartridge play (and make playing on simulators that much more enjoyable), and playing with the most powerful pokemon possible just feels better than playing with them at half their potential. people love the way smogon has run it for ages. fighting at level 50 also means that pokemon are hitting noticeably harder (the range is up to 5%, although normally not as drastic as this), and i think that this is pretty significant. for example, cb terrakion can 2hko hippowdon at level 50, while it can't at level 100
if you want to emulate the games that closely, why not look at the pokemon series in general and stick with a winning formula lol
joking aside, training to level 100 is sooo not a hardship, thanks to exp all, lucky egg in the storyline, and boosted exp for traded pokemon. theres also an area where people spam level 45-65 audino at you (chateau i think? right next to the day care lol).not to mention the high chance that an action replay for 3ds that'll give you your rare candies will probably be released.
i do however want to say that all the arguments for level 50 are completely valid, and they definetly do make sense. i still remain unconvinced because, while good, they just dont strike me as "omg this is something that needs to happen". smogon has been perfectly fine at level 100, and i dont think just brushing off tradition like it means nothing is the right way to go about this. traditions are important, why do you think they're still upheld nowadays? sticking with level 100 doesn't exactly hurt us, so i dont feel the urge to change it.