4. I am considering adding a "conservative" multiport that will only switch between NVC, LTC, FTC, MNC and possibly CGB. Would like to hear opinions on this.
I think there might be more use for the inverse, a pool that exclues LTC, NVC and FTC.
Either that, or adjust the minimum transfer amounts so that the higher valued coins can be transferred out in units of less than 1 coin.
Otherwise, for low-hashrate miners, time spend mining slow coins is almost wasted, as it takes so long to build up a transferrable stake that the market will have completely changed by then, and you always end up with 'trapped' coins that can't be transferred out.
I've stopped using the multipool because of this, and just occasionally switch between MEC and CAP, as coins that are always reasonably profitable.