Actually it's interesting idea, data stored on UTXO is enough to display basic information of address. Creating additional index for fast lookup shouldn't take much storage either.
We can get 4 TB M.2 SSD around $200 nowadays so the cost of maintaining the full blockchain data is cheaper now compared to few years back, so I will still recommend go with the full data
I already have one full archival node, and many pruned nodes. The cost is not the issue in case of local node, the problem is you usually don't get hardware with built-in 4 TB disk, so you need some external one.
But on other hand, most device let you replace it's internal storage. Some laptop even have multiple slots for internal storage (such as SATA + M2).