I get what you mean, you missing your desired feature while I absolutely despise the way how you express that. Plugin is listed with certain features for certain price, if it does not match your requirements you shouldn't buy in first place. Instead of saying that plugin is lame and useless you could politely ask if feature can be added like other customers but yet after me saying that is disrespectful you proceed to tell me how this and that should be already implemented because you spent money and there is free plugin which has this feature, I mean what the fuck?
side note, there are two other Welcome Panels on market, by Mevent and by Dana. None of them has page system and both cost 20$.