there ll be no "pro" and "cons", cuz game have serious tehnical problems.
3rd gameday, save is 200kb, its big for that game, but ok
30th gameday, save is 1Mb+, its abnormal
such save size progression here cuz in save stored EVERY ****n day!
u may ask- where is problem? there is a huge problem, cuz all modern browsers have only 10 Mb sized "local storage"... so, tehniacaly u ll unable to save in all 3 slots after 90 gamedays (its mean- u have no data from other games in "local storage")
ohh, almost forget- game have some massive script lags, enjoin it...
2dev: plz spend some time to leatn some twine...