You take few weekly, few family wide quests, few daily  which would be slowly completing during week and here we are, end up with more than 30 quests and can't do quests anymore on other character

Yeah, this has always been annoying, but they made it even worse when they added Liana and the various lifeskilling weeklies that go with her. It was already annoying easy to hit 30, but now it's super easy. IMHO, they should increase it to at least 50 - preferably more like 100. If they went that high, then the only way you'd hit the limit is if you just let quests pile up without dealing with them, whereas right now, dailies and weeklies easily cause problems with the limit.

They should separate cap for repeateble quests and normal quests. If you can have up to 30 from each cathegory, there would be no problem.