Probably the only one in the world thinking this but IMHO the BG2 inventory was near PERFECT.
I don't think it was "perfect" but it did its job competently.
And the restrictions didn't feel too bad simply because there wasn't the same inane amount of pointless items every-freaking-where. If we had the BG2 inventory in this game we would be driven to compulsive murder under the 10 hours mark, though.