It would be great to have an option in the Pokédex to view a Pokémon's Shiny version directly. This would make it easier to check their alternate colors without having to look them up elsewhere.

Currently, if you want to see a Shiny version, you either need to encounter one or search online. Adding a simple toggle in the Pokédex would be a nice quality-of-life feature for players who enjoy hunting or collecting Shinies

like this : 

you can also use gtl to check the shiny form but yeah, this might be tricky for rare to find forms or not so popular pokemon, this would be a nice QOL indeed

Good idea, the Pokemmo Pokedex is really poor, I totally agree with this kind of QoL additions.
I think it might also be interesting to have more search filters in the Pokedex. Currently, you can only sort by region.
It would be nice to be able to sort by type, egg group, etc. It's just QoL, nothing urgent, but it would be really super handy.