Thank you for trying it out! I'm glad the mechanics were interesting. Apologies for the multiple edits on this post, I am unsure how to reply.
Your suggestions are really good and I definitely do not mind. This is the first time I've heard suggestion number 3 and a left-hand keystroke as an alternate to [enter] it sounds really useful. I will try to implement as I work on it. I will be noting down 1 and 2 soon given my progress aligns with it and I should be able to test these if not this week then next week.
I do not think it is wise for me to make any hard and fast promises. There's the everpressing possibility that I get sidetracked or get slowed/stopped with my progress given I'm learning to program as I go.
Despite that, hank you for your kind sentiments :) I much appreciate it. I also admire your work and how organize your development seem to be on xD