As a DM for homebrew games, I used Roll20 for 2+ years. When it works, its OK. When it doesn't, its frustrating. I use a lot of custom rules and they are simply not supported due to a lack of modularity within the system. A simple variant of Proficiency Dice in 5e is outlined in the rules, and even it is hacky and not well supported on Roll20.
The format feels like it was made two decades ago, and the web console spits out warnings and errors left and right. There has even been some conspiracies / drama with some of the higher-ups at Roll20, showing a lack of leadership.
Please, let's let Roll20 die. Support another system.