Choose a commander you enjoy, define a clear strategy, add 7-10 win conditions, add the core components (draw, ramp, removal), build a 36-38 land mana base with color fixing, then playtest and tune the ratio
While Im vehemently against being a catch-up color as being a worthy part of color pie design when it comes to Commander, there are worse ways to do it
You have no maximum hand size
Although Goyf will often be stronger than all these cards, there are still plenty of examples where these cards can pull Goyf's weight
We had a box of Pokemon Cards and needed help assessing their value so we would know what to do with them The guy at this place was a walking Pokemon Card Encyclopedia, educated us on card values, shared the card selling market dynamics and made us a fair price offer on the entire box
New players are flocking to Magic every day and, naturally, everyone always wants to get their hands on new cards