Aquariums: Advice to improve my tank?

I have a 29Gal with Fluval Stratum aquasoil, white sand (didn’t cap it deep enough) but the sand/aquasoil look doesn’t bother me.

LIGHTS: Nicrew on 10 hour timer (I like a little algae too feed the oto’s)
PLANTS: I have a red flame sword, that bushy stuff that looks like dill, a couple rototalas of some kind I think? A few pieces of hydrophilia sunset, hair grass, a Java fern and an unidentified plant a friend gave me, located in the middle of the tank
As well as frogbit and duckweed floaters, and a pillea and pothos vine grow from the top
STOCKING: 1x docile female Betta
3x female Balloon Molly
4x Otocinclus (about a month old in my tank and thriving)
4x Nerite Snails
5x Pepper corydoras
(I’ve played with the idea of moving the Mollies to a separate tank and perhaps having a small school of rummynose tetra and Norman’s lampeye killifish)
FILTRATION: 1x large sponge filter
1x Topfin HOB for 20Gal
What would you change, add or subtract from my tank to achieve perfection? 👌🏻