Zhirair, very interesting! Thanks for sharing. Your method reminds me of a gardener I knew as a child, who had a stone raised bed in his yard, that each spring was full of red Tulips (followed by annuals for summer). He always waited till the tulip foliage was yellowing before planting annuals, then dug the bulbs and stored them for the summer. He said he'd been replanting the same Tulips for many years, and always had a colorful display.
To be sure I'm clear, after you dig and divide the bulbs after their first bloom, do you continue to dig and divide them annually?