EU2 already gives more XP, because every win on siege gives x2 (from x1 to x3, x3 to x5) and rounds last longer which means you can enjoy that x5 unlike on EU1 where rounds rarely last longer than minute and half thanks to new team balance script which makes leading team much weaker next round so it always ends 4:3.
Lack of XP or gold is isn't the reason why people stopped playing siege.