Help upgrading my Marrow Gnawer pet deck

[velvet owl]

https://www.moxfield.com/decks/07ftKdagmk2ZDBRDs9BBMA

Heyo! This was my first commander a couple years ago, it used to suck and do nothing but over the time it got better, and at least make a lot of rats. It desperately needs more interaction and i don't think i can cut any draw or [[Rat Colony]] any tips on making this a bit more competent ?

[dense hinge]

https://scryfall.com/card/dom/101/rat-colony

Rat Colony <:mana1:292901508373282827><:manab:292901508872273920>

Creature — Rat
Rat Colony gets +1/+0 for each other Rat you control.
A deck can have any number of cards named Rat Colony.
Wreckage from the Phyrexian Invasion provided the rats with a seemingly unlimited number of breeding grounds.
2/1

[stark isle]

How do you want to win? I don't run Zulaport Cutthroat or Bastion of Remembrance because this is not how I want to win with my rats. I still run Ayara, First of Locthwain though.

[runic cargo]

here is mine, been at it since 2017 with Marrow

https://archidekt.com/decks/699112

Species Specialist is the best non-rat in any rat deck

[velvet owl]

The main win con is obviously rats, big or wide. Zulaport Cutthroat and Bastion of Remembrance are just a bit of insurance against board wipes and a enabler for marrow to combo with the Staff

[hot nymph]

My advice would be to take typhoid rats and wave of rats out, neither of them are doing much for you.