He isn't asking for a "fix" he is just suggesting something that would be interesting for people like me who started playing a week ago. I have never played pvp rank or unranked not because I can't but because I don't see the point until I have proper lvl100 pvp mons. And because I'm still doing the story. If in unrank everyone had their pokes set to lvl50 then I would probably have played a few times already.
Getting pokes to lvl 100 is not the point at all, the point is that you can walk around with your lvl100 1 year old pvp ready pokes and challenge someone who plays for a few days and it will be somewhat interesting for the new player because you will both have everything at lvl50 albeit his evs will be all messed up i'm sure. The only problem with this suggestion is that it requires some effort from the devs and tbh it isn't really a big deal since it's just unranked and it doesn't matter so it's understandable if they don't want to spend time on this. Other than that it's an okay suggestion.
In my opinion a better idea would be to have a kind of pvp ladder for people who have low play time or low number of pokedex entries or something like that so there would be a pvp ladder for casuals who are walking aroudn with their lvl 15 charmander and unlocking kanto that could have low value rewards like potion or pokeball or whatever.