So I've just started playing Labryinth of Touhou, after finally tracking down a copy (my poor wallet), and I've gotten mostly used to the mechanics, but I've got two question if anyone minds answering them: 1. Should I start with a new file entirely, or a new file plus? 2. Any characters I should embrace/stay away from as a first time player?
If you're a first time player, you definitely should start with a new file entirely. I don't care what argument people will give you about using a "good" team that you'll stick with the entire game. Part of the fun is honestly acquiring the characters the normal way (though you'll probably have to look up how to get some of them), and messing around with team composition as you go. You'll eventually notice that some characters are better than others for accomplishing specific tasks. This would be where you make the final decisions as ultimately, you could go through the game with your favorite characters regardless of whether or not they're the most "optimal" for the team composition.
One thing I should mention is that you shouldn't dump all your Skill Points into your current team. You'll likely be making changes to your team composition as you go along so you should always have some "savings" if you will, to prepare for the eventual changes. That said, your initial cast of characters plus Meiling are great characters to keep for a majority of the game. You might end up dropping some of them down the road, but Reimu and Marisa are ALWAYS useful to keep investing in. Marisa's Master Spark is used in pretty much all end game boss fights and Reimu's group healing and group buffing abilities are a god send.
In short, start a new file and play through the game normally. There are no characters you should stay away from as ultimately, you pick the characters based on your play style. If it wasn't obvious enough from my last paragraph, Reimu and Marisa would be characters to embrace. Contrary to what Dawn seems to think, there are no useless characters. It all depends on how you want to play and who you want to play with.
And yeah Evasion is a broken stat, don't invest in it.
Also what version are you playing? (I'm assuming Special Disk 3.01 but just asking to be sure.)
Edit: Also, you should probably find a CharaGraph folder to replace the game's art as its hilariously bad.
Here's
mine. I took some art from Touhou Pocket Wars EVO and edited them so that they'd work in game, though obviously you could make your own CharaGraph folder as I've done with mine.