I didn't mean to come off sounding quite so negative. RPG Maker is a great program for people who don't want to code at all. Unfortunately, if a person doesn't want to code, then they choose to recycle old systems and mechanisms. In the case of RPG Maker, this means the game will be a top-down party-based RPG that will play like a watered-down Final Fantasy from the mid-90's.

So as I said, it's not worth the trouble unless you want a FF-clone.

It's not really negativity, that's just the fact about kits. It's a nice program for those who want nothing more than what the software can offer, i. e. make a Final Fantasy clone, but for anything else you're better off making your own game from scratch. The same really goes for any "kit", unless you are fine with just using a template you're better off doing it on your own. I have my own extension for Unity engine and I intentionally designed it not to be a kit, but a programing library; this means you still have to code things yourself but you're not limited to only what I came up with, but you can do literally anything you can come up with.

This is not true at all.

RPG Maker is highly extensive if you know Ruby (which is coincidentally my language of choice today, as I'm a Rails developer) and you there are TONS of free available scripts made by the community to help other people - The Unify Community tutorials have nothing on the RPG Maker tutorials. Unity is a terrific engine to build pretty much anything, but in the specific case of 2D RPGs it certainly isn't the most suitable tool for the job because there's a clear superior contender on the market for that.

RPG Maker is great for those who don't know how to program but it's also a very nice tool for those who can program well, because it speeds the creation of the game by months or even years. If I decided to take the time to build an interface similar to that of RPG Maker I know it'd take a few years of my spare time, and I'd rather go to the important parts of developing games (story, game design, art) sooner rather than doing the low-level part all by myself when people have been there and done that very well before me.

This is actually great idea. Final boss - guys who hold SS2 rights.