I suppose the idea here is what would they be fixing by removing the daily login rewards as they currently are? The way the daily login rewards generates someone gold is through selling the mats. There is no raw gold given through daily logins. So the current rendition of daily logins simply creates an influx of supply, making everyone's gold effectively worth more. What's an easy way to make raw gold right now? Actually playing and doing the dailies and weeklies.
Removing the current daily login rewards would crush the supply of mats that we currently have which would end up hurting new players who don't have plenty of gold to spare. Furthermore, it would drop sales of GW2 expansions being that that is, currently, the only way to "easily" get multiple accounts which receive daily login rewards. Lower sales, lower new player retention rate due to the cost of mats going up; it doesn't seem like the logical call to make.
Being that this change could potentially affect sales/player retention, it'd be really nice if we could get some input from Devs.