SERIOUS! Should I start a F2P account?

Making a secondary F2P account is a better alternative to spending money in my opinion. The money you spend chasing .PNGs can go to a mainline Fire Emblem game or a Switch. Whenever you get the urge to want to spend just whip out another device use your daily login orbs to feed the vice. Also, now might be a good time to get started with such a pretty stacked Legendary banner.

Sure doing this could be a good idea. Rules to abide by in my opinion could be this
Rule 1: Only summon one whole round including that free summon then no more summoning from that banner.
Rule 2: If you get a bronze or lower get rid of them right away either by inheriting their skills away or just sending them home.
Rule 3: Never inherent golds abilities. Only merge golds together.

Hope those rules are good ideas.

I've suspected for some time that it's a good way for a p2p player to practice orb discipline, because this account will give you absolutely nothing extra to work with if you don't use your orbs carefully.

I would love to be kept up to date with the units you summon and are using and their builds. I love this sort of thing, especially if you decide to go by the rules I put out.

I've done this about 6 times. The $ spent is simply not worth it IMO. With F2P, I get mostly everyone that is a focus on one account at least. And, after the novelty of the new characters wear off quickly. I have less buyers remorse. I will admit that if I roll 5 of the same focus orbs that I want, I might be inclined to purchase orbs.

I'd recommend starting a new account during the legendary events.

Lol, rules? Why? You're the only one that will know.

One caveat is that having many accounts can be annoying to keep up.