I really hope you're kidding, if you afk in your house for an experience bonus you probably afk a lot.
For something like that, that's better than a daily reset ticket, much better. Also, you'd see a lot more people leaving their alts in their houses all day, right now I have over 22m bonus experience, which I can't even use because of Frogster being stupid and limiting it to the level cap.
Someone asked me to make them an experience orb and my bonus experience was completely useless, it slowed down the process by half, that and I had an experience pot lying around and that didn't affect it either, Frogster really needs to fix that. But anyways, yeah this is a pretty awful idea when I'm sure 22m bonus experience is nothing compared to some other people.
I took a really long break from the game and was in my house the entire time, so i've got a few million EXP built up and i never notice a decrease in the bonuses that i have really, from level 45 to 56 i rarely logged off in my house, but my bonuses stayed roughly in the same palce.
But i see what you're saying, how people with massive exp bonuses would just use it to level way fast, so perhaps refine the idea a bit. Instead of giving ALL the exp, have several orbs that give set amounts of EXP IMMEDIATELY, so you can't sell orbs or give orbs to alts,. You'd still need to be level 55 to use them, but maybe the amount of Exp you can get is like 1M, 3M and 5M and TP is 100K, 300K and 500K. That way even if people did have tons of bonus exp and tp saved up using the orbs wouldn't really be a viable way of leveling unless you had Tons of diamonds
I just hate to see all my bonus Exp/Tp never really getting used, the bonus it provides at my level is hardly worth it, and i doubt my bonuses will be gone even if i just ground to level 65.
Edit: Also you said, " limiting it to the level cap" I'm not max level so i don't quite get what you mean by that. Could you elaborate?