Truthfully, I liked the light/infusion system we got, since it addressed one of the biggest annoyances in Destiny, leveling a side character.

It's nice knowing I can get a character to 40, get a full set of legendary gear and then bring them up to or near my highest level character. It saves everyone some time and this is worth the trade off of it potentially feeling "less substantial."

Plus, it would cause an imbalance with gear. The best way to explain it is like this. One of the best exotics in the game is postmaster given Iron Gjallarhorn. This is because the gun itself has no level requirement, so you can have a 400 light gun at level 3 or whatever. If they do a system like this, with infusion, people won't have to hit the new cap to reach the light cap, as long as they have one character already there. Since people will already have 400 or whatever light at level 20, with a cap of 30, 40 or whatever, it won't make much of a difference, so they'd have to change gear in some way to accommodate it and this is just messy.