Glad that you are enjoying commander, it's a ton of fun! If you do end up a bit of a commander removal magnet there are lots of blue and green cards that give hexproof and indestructible for 1 mana that are easy to slip in. Some of my commanders sure need more.

If you wanna replace some of the more expensive or less splashy ramp pieces with the 1 drop elves that make mana those are always useful. Though i get if the deck is full furries. The 1 mana bird dorks are up your alley for sure, let you play loot turn 2

that's a good place for a commander to be, plus it means you can run less card draw in the 99 because it's always in your command zone. Also meet your new best friend in a loot deck

are you wanting more to focus on a mix of spellcasting and creatures or a more standard midrange? If its the first the original 3 cost Loot would be a good pick for commander, pseudo card draw so you can focus more on finding some good specific cards.

Prowess is a good way of doing that. this is worth some cash but might be what you want.

This goes in about every deck where your commander taps or is super important as well.

The main focus for these is to equip them to your double striking commander and hit people in the face. Deathtouch and Trample is a silly combo, letting you deal one damage to a blocker then do the rest to your opponent, double strike letting you kill blockers before they hurt you.

The first card is sadly 20 bucks but the cards kinda do what you're looking for if you're ok with some worse rates on mana and not getting a body attached.