I could say finances are causing releases to be far apart (and hopefully drive some extra patrons), but.... it would be a lie!
The main reason updates take so long is because of the amount of work involved. I have a full-time job, so I spend about 5-6hrs per evening (weekdays) and about 10-12hrs per weekend working on it and still barely manage to get an update out every month. sometimes I take an evening or weekend day off for RL shit and sometimes I cram extra time into the game, but overall, it's around 60hrs per week. I managed to cope solo for the first few months because I had been working on stuff in the background before I ever released, so I had a bit of a stockpile to pull from, but now I wouldn't be able to get an update out monthly without Aeilion on the team! So without him, I would have had to switch to an update every two months, rather than one per month.
The delay before this episode was the longest since I started because a good chunk of Nov/Dec were a write-off because I had too much other shit to sort out (Girlfriend QT, exams and I changed job).
So, in short, more money won't increase release speed. But eventually, would like to continue to expand the team, so that would be the next financial goal! But even if I expanded the team, I wouldn't move to updates shorter than a month. I'd work on improved quality / possibly more features (one good example would be the ability to add short animations since Aeilion cmae on board)